/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:02:44,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:02:44,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:02:44,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:02:44,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:02:44,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:02:44,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:02:44,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:02:44,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:02:44,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:02:44,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:02:44,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:02:44,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:02:44,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:02:44,306 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:02:44,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:02:44,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:02:44,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:02:44,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:02:44,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:02:44,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:02:44,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:02:44,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:02:44,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:02:44,311 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:02:44,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:02:44,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:02:44,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:02:44,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:02:44,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:02:44,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:02:44,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:02:44,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:02:44,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:02:44,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:02:44,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:02:44,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:02:44,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:02:44,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:02:44,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:02:44,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:02:44,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:02:44,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:02:44,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:02:44,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:02:44,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:02:44,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2021-10-08 16:02:44,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d49b61/424378c157e5486a90f41ccdb0e9cf05/FLAG877820293 [2021-10-08 16:02:45,742 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:02:45,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2021-10-08 16:02:45,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d49b61/424378c157e5486a90f41ccdb0e9cf05/FLAG877820293 [2021-10-08 16:02:46,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d49b61/424378c157e5486a90f41ccdb0e9cf05 [2021-10-08 16:02:46,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:02:46,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:02:46,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:02:46,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:02:46,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:02:46,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3094a300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46, skipping insertion in model container [2021-10-08 16:02:46,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:02:46,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:02:46,329 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2080,2093] [2021-10-08 16:02:46,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:02:46,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:02:46,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2080,2093] [2021-10-08 16:02:46,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:02:46,390 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:02:46,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46 WrapperNode [2021-10-08 16:02:46,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:02:46,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:02:46,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:02:46,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:02:46,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:02:46,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:02:46,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:02:46,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:02:46,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:02:46,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:02:46,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:02:46,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:02:46,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (1/1) ... [2021-10-08 16:02:46,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:02:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:46,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:02:46,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:02:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:02:46,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:02:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:02:46,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:02:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:02:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:02:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:02:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:02:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:02:46,617 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:02:47,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:02:47,216 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 16:02:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:02:47 BoogieIcfgContainer [2021-10-08 16:02:47,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:02:47,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:02:47,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:02:47,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:02:47,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:02:46" (1/3) ... [2021-10-08 16:02:47,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35226932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:02:47, skipping insertion in model container [2021-10-08 16:02:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:02:46" (2/3) ... [2021-10-08 16:02:47,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35226932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:02:47, skipping insertion in model container [2021-10-08 16:02:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:02:47" (3/3) ... [2021-10-08 16:02:47,235 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2021-10-08 16:02:47,245 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:02:47,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:02:47,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 16:02:47,245 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:02:47,298 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,299 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,299 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,299 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,301 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,301 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,304 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,304 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,304 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,304 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,305 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,305 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,305 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,305 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,305 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,306 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,307 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,307 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,307 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,307 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,308 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,309 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,310 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,312 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,312 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,312 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,313 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,313 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,313 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,313 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,315 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,316 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,316 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,316 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,317 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,318 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,320 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,320 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,321 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,321 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,321 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,321 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,322 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,323 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,330 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,337 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,340 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,340 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,344 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:02:47,353 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 16:02:47,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:02:47,416 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:02:47,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-08 16:02:47,440 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:02:47,453 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 96 transitions, 208 flow [2021-10-08 16:02:47,457 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 96 transitions, 208 flow [2021-10-08 16:02:47,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 96 transitions, 208 flow [2021-10-08 16:02:47,510 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2021-10-08 16:02:47,511 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 16:02:47,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 6/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-08 16:02:47,520 INFO L116 LiptonReduction]: Number of co-enabled transitions 992 [2021-10-08 16:02:51,485 INFO L131 LiptonReduction]: Checked pairs total: 1312 [2021-10-08 16:02:51,485 INFO L133 LiptonReduction]: Total number of compositions: 96 [2021-10-08 16:02:51,496 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 16:02:51,516 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:02:51,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:51,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:02:51,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash 12705874, now seen corresponding path program 1 times [2021-10-08 16:02:51,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:51,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317057722] [2021-10-08 16:02:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:51,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:51,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:51,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317057722] [2021-10-08 16:02:51,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317057722] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:51,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:51,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:02:51,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095599723] [2021-10-08 16:02:51,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:51,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:51,827 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:51,879 INFO L93 Difference]: Finished difference Result 186 states and 430 transitions. [2021-10-08 16:02:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:51,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:02:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:51,900 INFO L225 Difference]: With dead ends: 186 [2021-10-08 16:02:51,900 INFO L226 Difference]: Without dead ends: 186 [2021-10-08 16:02:51,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-08 16:02:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 129. [2021-10-08 16:02:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 3.175925925925926) internal successors, (343), 128 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 343 transitions. [2021-10-08 16:02:51,971 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 343 transitions. Word has length 4 [2021-10-08 16:02:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:51,973 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 343 transitions. [2021-10-08 16:02:51,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 343 transitions. [2021-10-08 16:02:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:02:51,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:51,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:02:51,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:02:51,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:51,981 INFO L82 PathProgramCache]: Analyzing trace with hash 12705838, now seen corresponding path program 1 times [2021-10-08 16:02:51,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:51,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296026580] [2021-10-08 16:02:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:51,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:52,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296026580] [2021-10-08 16:02:52,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296026580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:52,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:52,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:02:52,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499872316] [2021-10-08 16:02:52,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:52,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:52,048 INFO L87 Difference]: Start difference. First operand 129 states and 343 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:52,068 INFO L93 Difference]: Finished difference Result 115 states and 295 transitions. [2021-10-08 16:02:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:52,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:02:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:52,071 INFO L225 Difference]: With dead ends: 115 [2021-10-08 16:02:52,071 INFO L226 Difference]: Without dead ends: 115 [2021-10-08 16:02:52,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-08 16:02:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-08 16:02:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 98 states have (on average 3.010204081632653) internal successors, (295), 114 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 295 transitions. [2021-10-08 16:02:52,086 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 295 transitions. Word has length 4 [2021-10-08 16:02:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:52,086 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 295 transitions. [2021-10-08 16:02:52,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 295 transitions. [2021-10-08 16:02:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:02:52,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:52,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:02:52,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:02:52,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:52,089 INFO L82 PathProgramCache]: Analyzing trace with hash 12705839, now seen corresponding path program 1 times [2021-10-08 16:02:52,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:52,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603810908] [2021-10-08 16:02:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:52,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:52,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603810908] [2021-10-08 16:02:52,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603810908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:52,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:52,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:02:52,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473304414] [2021-10-08 16:02:52,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:52,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:52,126 INFO L87 Difference]: Start difference. First operand 115 states and 295 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:52,148 INFO L93 Difference]: Finished difference Result 120 states and 263 transitions. [2021-10-08 16:02:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:02:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:52,151 INFO L225 Difference]: With dead ends: 120 [2021-10-08 16:02:52,151 INFO L226 Difference]: Without dead ends: 120 [2021-10-08 16:02:52,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-08 16:02:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2021-10-08 16:02:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 96 states have (on average 2.6770833333333335) internal successors, (257), 112 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2021-10-08 16:02:52,164 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 4 [2021-10-08 16:02:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:52,165 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2021-10-08 16:02:52,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2021-10-08 16:02:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:02:52,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:52,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:02:52,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:02:52,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:52,168 INFO L82 PathProgramCache]: Analyzing trace with hash 393883641, now seen corresponding path program 1 times [2021-10-08 16:02:52,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:52,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336275939] [2021-10-08 16:02:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:52,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:52,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336275939] [2021-10-08 16:02:52,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336275939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:52,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31587722] [2021-10-08 16:02:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:52,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:52,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:52,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:52,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:02:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:52,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31587722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:52,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:52,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 16:02:52,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420872806] [2021-10-08 16:02:52,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:02:52,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:02:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:52,377 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:52,433 INFO L93 Difference]: Finished difference Result 177 states and 406 transitions. [2021-10-08 16:02:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:02:52,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:02:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:52,442 INFO L225 Difference]: With dead ends: 177 [2021-10-08 16:02:52,442 INFO L226 Difference]: Without dead ends: 177 [2021-10-08 16:02:52,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-08 16:02:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 127. [2021-10-08 16:02:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 110 states have (on average 3.0272727272727273) internal successors, (333), 126 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 333 transitions. [2021-10-08 16:02:52,474 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 333 transitions. Word has length 5 [2021-10-08 16:02:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:52,475 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 333 transitions. [2021-10-08 16:02:52,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 333 transitions. [2021-10-08 16:02:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:02:52,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:52,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:02:52,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:52,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:52,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:52,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash 393883664, now seen corresponding path program 1 times [2021-10-08 16:02:52,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:52,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861159039] [2021-10-08 16:02:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:52,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:52,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861159039] [2021-10-08 16:02:52,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861159039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:52,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839067024] [2021-10-08 16:02:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:52,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:52,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:52,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:02:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:52,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:52,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:52,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839067024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:52,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:02:52,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-08 16:02:52,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118578633] [2021-10-08 16:02:52,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:02:52,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:02:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:52,862 INFO L87 Difference]: Start difference. First operand 127 states and 333 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:52,878 INFO L93 Difference]: Finished difference Result 120 states and 291 transitions. [2021-10-08 16:02:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:02:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:02:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:52,880 INFO L225 Difference]: With dead ends: 120 [2021-10-08 16:02:52,880 INFO L226 Difference]: Without dead ends: 120 [2021-10-08 16:02:52,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-08 16:02:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2021-10-08 16:02:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 100 states have (on average 2.85) internal successors, (285), 112 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 285 transitions. [2021-10-08 16:02:52,894 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 285 transitions. Word has length 5 [2021-10-08 16:02:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:52,894 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 285 transitions. [2021-10-08 16:02:52,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 285 transitions. [2021-10-08 16:02:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:02:52,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:52,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:02:52,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:53,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash 393883606, now seen corresponding path program 1 times [2021-10-08 16:02:53,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:53,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786956741] [2021-10-08 16:02:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:53,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:53,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:53,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786956741] [2021-10-08 16:02:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786956741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:53,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117548027] [2021-10-08 16:02:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:53,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:53,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:53,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:02:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:53,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:53,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117548027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:53,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:53,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 16:02:53,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549222934] [2021-10-08 16:02:53,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:02:53,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:02:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:02:53,254 INFO L87 Difference]: Start difference. First operand 113 states and 285 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:53,297 INFO L93 Difference]: Finished difference Result 191 states and 419 transitions. [2021-10-08 16:02:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:02:53,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:02:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:53,300 INFO L225 Difference]: With dead ends: 191 [2021-10-08 16:02:53,300 INFO L226 Difference]: Without dead ends: 191 [2021-10-08 16:02:53,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:02:53,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-08 16:02:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 145. [2021-10-08 16:02:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 132 states have (on average 2.893939393939394) internal successors, (382), 144 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 382 transitions. [2021-10-08 16:02:53,315 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 382 transitions. Word has length 5 [2021-10-08 16:02:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:53,315 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 382 transitions. [2021-10-08 16:02:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 382 transitions. [2021-10-08 16:02:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:02:53,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:53,317 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:02:53,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:53,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash -674507470, now seen corresponding path program 2 times [2021-10-08 16:02:53,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:53,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579741361] [2021-10-08 16:02:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:53,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:53,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:53,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579741361] [2021-10-08 16:02:53,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579741361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:53,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876981298] [2021-10-08 16:02:53,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:53,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:53,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:53,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:02:53,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:02:53,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:53,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:53,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:02:53,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876981298] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:53,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:02:53,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-08 16:02:53,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317513728] [2021-10-08 16:02:53,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:53,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:53,681 INFO L87 Difference]: Start difference. First operand 145 states and 382 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:53,694 INFO L93 Difference]: Finished difference Result 127 states and 320 transitions. [2021-10-08 16:02:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:53,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:02:53,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:53,696 INFO L225 Difference]: With dead ends: 127 [2021-10-08 16:02:53,697 INFO L226 Difference]: Without dead ends: 127 [2021-10-08 16:02:53,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-08 16:02:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2021-10-08 16:02:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 2.627450980392157) internal successors, (268), 110 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 268 transitions. [2021-10-08 16:02:53,706 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 268 transitions. Word has length 6 [2021-10-08 16:02:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:53,706 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 268 transitions. [2021-10-08 16:02:53,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 268 transitions. [2021-10-08 16:02:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:02:53,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:53,707 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:02:53,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:53,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,922 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:53,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:53,923 INFO L82 PathProgramCache]: Analyzing trace with hash -674507505, now seen corresponding path program 2 times [2021-10-08 16:02:53,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:53,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096078137] [2021-10-08 16:02:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:53,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:53,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:53,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096078137] [2021-10-08 16:02:53,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096078137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:53,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068126703] [2021-10-08 16:02:53,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:53,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:53,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:53,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:02:54,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:02:54,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:54,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:02:54,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068126703] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:54,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-08 16:02:54,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029364882] [2021-10-08 16:02:54,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:02:54,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:02:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:54,050 INFO L87 Difference]: Start difference. First operand 111 states and 268 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:54,086 INFO L93 Difference]: Finished difference Result 202 states and 449 transitions. [2021-10-08 16:02:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:02:54,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:02:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:54,089 INFO L225 Difference]: With dead ends: 202 [2021-10-08 16:02:54,089 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 16:02:54,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 16:02:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 133. [2021-10-08 16:02:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 2.717741935483871) internal successors, (337), 132 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2021-10-08 16:02:54,100 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 6 [2021-10-08 16:02:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:54,100 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2021-10-08 16:02:54,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2021-10-08 16:02:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:02:54,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:54,101 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 16:02:54,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:54,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:54,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash 565106422, now seen corresponding path program 3 times [2021-10-08 16:02:54,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970339019] [2021-10-08 16:02:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:54,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:54,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:54,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970339019] [2021-10-08 16:02:54,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970339019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:54,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514974490] [2021-10-08 16:02:54,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:02:54,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:54,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:54,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:02:54,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:02:54,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:02:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:54,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514974490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:54,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:54,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-08 16:02:54,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517216263] [2021-10-08 16:02:54,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:02:54,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:02:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:54,513 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:54,557 INFO L93 Difference]: Finished difference Result 251 states and 577 transitions. [2021-10-08 16:02:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:02:54,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:02:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:54,560 INFO L225 Difference]: With dead ends: 251 [2021-10-08 16:02:54,561 INFO L226 Difference]: Without dead ends: 251 [2021-10-08 16:02:54,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-08 16:02:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 155. [2021-10-08 16:02:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 146 states have (on average 2.780821917808219) internal successors, (406), 154 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 406 transitions. [2021-10-08 16:02:54,571 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 406 transitions. Word has length 7 [2021-10-08 16:02:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:54,571 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 406 transitions. [2021-10-08 16:02:54,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 406 transitions. [2021-10-08 16:02:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:02:54,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:54,573 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-08 16:02:54,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:54,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:54,788 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash 338432495, now seen corresponding path program 4 times [2021-10-08 16:02:54,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:54,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036895074] [2021-10-08 16:02:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:54,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:54,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:54,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036895074] [2021-10-08 16:02:54,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036895074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:54,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314435205] [2021-10-08 16:02:54,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:54,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:54,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:54,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:54,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:02:54,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:54,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:54,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:02:54,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:54,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314435205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:54,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:54,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-08 16:02:54,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939372038] [2021-10-08 16:02:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:02:54,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:02:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:02:54,950 INFO L87 Difference]: Start difference. First operand 155 states and 406 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:55,018 INFO L93 Difference]: Finished difference Result 300 states and 705 transitions. [2021-10-08 16:02:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:02:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:02:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:55,022 INFO L225 Difference]: With dead ends: 300 [2021-10-08 16:02:55,022 INFO L226 Difference]: Without dead ends: 300 [2021-10-08 16:02:55,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:02:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-08 16:02:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 177. [2021-10-08 16:02:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 168 states have (on average 2.8273809523809526) internal successors, (475), 176 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 475 transitions. [2021-10-08 16:02:55,036 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 475 transitions. Word has length 8 [2021-10-08 16:02:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:55,036 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 475 transitions. [2021-10-08 16:02:55,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 475 transitions. [2021-10-08 16:02:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:02:55,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:55,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:55,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:55,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-08 16:02:55,254 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:55,255 INFO L82 PathProgramCache]: Analyzing trace with hash 338045741, now seen corresponding path program 1 times [2021-10-08 16:02:55,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:55,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488147631] [2021-10-08 16:02:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:55,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:55,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:55,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488147631] [2021-10-08 16:02:55,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488147631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:55,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:55,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:02:55,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654002997] [2021-10-08 16:02:55,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:55,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:55,302 INFO L87 Difference]: Start difference. First operand 177 states and 475 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:55,317 INFO L93 Difference]: Finished difference Result 244 states and 654 transitions. [2021-10-08 16:02:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:02:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:55,320 INFO L225 Difference]: With dead ends: 244 [2021-10-08 16:02:55,320 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 16:02:55,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 16:02:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 211. [2021-10-08 16:02:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 202 states have (on average 2.9554455445544554) internal successors, (597), 210 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 597 transitions. [2021-10-08 16:02:55,331 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 597 transitions. Word has length 8 [2021-10-08 16:02:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 597 transitions. [2021-10-08 16:02:55,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 597 transitions. [2021-10-08 16:02:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:02:55,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:55,338 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2021-10-08 16:02:55,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:02:55,339 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1901475350, now seen corresponding path program 5 times [2021-10-08 16:02:55,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:55,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268320438] [2021-10-08 16:02:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:55,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:55,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:55,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268320438] [2021-10-08 16:02:55,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268320438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:55,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881439521] [2021-10-08 16:02:55,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:55,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:55,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:55,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:55,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 16:02:55,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:02:55,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:55,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:02:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:55,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881439521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:55,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:55,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-08 16:02:55,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904833863] [2021-10-08 16:02:55,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:02:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:02:55,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:02:55,535 INFO L87 Difference]: Start difference. First operand 211 states and 597 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:55,601 INFO L93 Difference]: Finished difference Result 389 states and 975 transitions. [2021-10-08 16:02:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:02:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:02:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:55,604 INFO L225 Difference]: With dead ends: 389 [2021-10-08 16:02:55,605 INFO L226 Difference]: Without dead ends: 389 [2021-10-08 16:02:55,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:02:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-08 16:02:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 239. [2021-10-08 16:02:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 230 states have (on average 2.982608695652174) internal successors, (686), 238 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 686 transitions. [2021-10-08 16:02:55,617 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 686 transitions. Word has length 9 [2021-10-08 16:02:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:55,617 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 686 transitions. [2021-10-08 16:02:55,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 686 transitions. [2021-10-08 16:02:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:02:55,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:55,618 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2021-10-08 16:02:55,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:55,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-08 16:02:55,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:55,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1183803697, now seen corresponding path program 6 times [2021-10-08 16:02:55,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:55,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80421414] [2021-10-08 16:02:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:55,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:55,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:55,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80421414] [2021-10-08 16:02:55,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80421414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:55,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914066306] [2021-10-08 16:02:55,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:02:55,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:55,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:55,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:55,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:02:55,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:02:55,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:02:55,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:56,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914066306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:56,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:56,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-08 16:02:56,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783301487] [2021-10-08 16:02:56,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:02:56,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:02:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:02:56,014 INFO L87 Difference]: Start difference. First operand 239 states and 686 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:56,094 INFO L93 Difference]: Finished difference Result 444 states and 1123 transitions. [2021-10-08 16:02:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:02:56,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:02:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:56,099 INFO L225 Difference]: With dead ends: 444 [2021-10-08 16:02:56,099 INFO L226 Difference]: Without dead ends: 444 [2021-10-08 16:02:56,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:02:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-08 16:02:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 267. [2021-10-08 16:02:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 258 states have (on average 3.003875968992248) internal successors, (775), 266 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 775 transitions. [2021-10-08 16:02:56,113 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 775 transitions. Word has length 10 [2021-10-08 16:02:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:56,113 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 775 transitions. [2021-10-08 16:02:56,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 775 transitions. [2021-10-08 16:02:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:02:56,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:56,114 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:56,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:56,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:56,328 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1195794278, now seen corresponding path program 1 times [2021-10-08 16:02:56,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:56,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005405033] [2021-10-08 16:02:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:56,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:56,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:56,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005405033] [2021-10-08 16:02:56,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005405033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:56,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028491052] [2021-10-08 16:02:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:56,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:56,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:56,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:56,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:02:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:56,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:56,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:56,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028491052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:56,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:56,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 16:02:56,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660072544] [2021-10-08 16:02:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:02:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:02:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:56,459 INFO L87 Difference]: Start difference. First operand 267 states and 775 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:56,483 INFO L93 Difference]: Finished difference Result 387 states and 1115 transitions. [2021-10-08 16:02:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:02:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:02:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:56,487 INFO L225 Difference]: With dead ends: 387 [2021-10-08 16:02:56,487 INFO L226 Difference]: Without dead ends: 387 [2021-10-08 16:02:56,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:02:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-10-08 16:02:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 313. [2021-10-08 16:02:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 304 states have (on average 3.226973684210526) internal successors, (981), 312 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 981 transitions. [2021-10-08 16:02:56,500 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 981 transitions. Word has length 10 [2021-10-08 16:02:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:56,500 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 981 transitions. [2021-10-08 16:02:56,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 981 transitions. [2021-10-08 16:02:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:02:56,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:56,501 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:56,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:56,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-08 16:02:56,716 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:56,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1195794245, now seen corresponding path program 1 times [2021-10-08 16:02:56,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:56,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277701733] [2021-10-08 16:02:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:56,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:56,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277701733] [2021-10-08 16:02:56,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277701733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:56,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:56,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:02:56,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954681007] [2021-10-08 16:02:56,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:56,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:56,743 INFO L87 Difference]: Start difference. First operand 313 states and 981 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:56,754 INFO L93 Difference]: Finished difference Result 291 states and 847 transitions. [2021-10-08 16:02:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:02:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:56,758 INFO L225 Difference]: With dead ends: 291 [2021-10-08 16:02:56,758 INFO L226 Difference]: Without dead ends: 291 [2021-10-08 16:02:56,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-08 16:02:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2021-10-08 16:02:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 280 states have (on average 2.9857142857142858) internal successors, (836), 286 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 836 transitions. [2021-10-08 16:02:56,770 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 836 transitions. Word has length 10 [2021-10-08 16:02:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:56,770 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 836 transitions. [2021-10-08 16:02:56,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 836 transitions. [2021-10-08 16:02:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:02:56,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:56,772 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2021-10-08 16:02:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 16:02:56,772 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1956793654, now seen corresponding path program 7 times [2021-10-08 16:02:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:56,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966532698] [2021-10-08 16:02:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:56,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:56,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:56,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966532698] [2021-10-08 16:02:56,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966532698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:56,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172622448] [2021-10-08 16:02:56,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:02:56,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:56,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:56,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 16:02:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:56,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:02:56,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:56,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172622448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:56,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:56,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-08 16:02:56,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096839332] [2021-10-08 16:02:56,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:02:56,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:02:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:02:56,954 INFO L87 Difference]: Start difference. First operand 287 states and 836 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:57,023 INFO L93 Difference]: Finished difference Result 483 states and 1266 transitions. [2021-10-08 16:02:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:02:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:02:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:57,027 INFO L225 Difference]: With dead ends: 483 [2021-10-08 16:02:57,027 INFO L226 Difference]: Without dead ends: 483 [2021-10-08 16:02:57,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:02:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-08 16:02:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 319. [2021-10-08 16:02:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 312 states have (on average 2.9935897435897436) internal successors, (934), 318 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 934 transitions. [2021-10-08 16:02:57,042 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 934 transitions. Word has length 11 [2021-10-08 16:02:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:57,043 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 934 transitions. [2021-10-08 16:02:57,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 934 transitions. [2021-10-08 16:02:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:02:57,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:57,044 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2021-10-08 16:02:57,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:57,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:57,260 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash 531063727, now seen corresponding path program 8 times [2021-10-08 16:02:57,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:57,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257787801] [2021-10-08 16:02:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:57,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:57,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:57,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257787801] [2021-10-08 16:02:57,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257787801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:57,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958989947] [2021-10-08 16:02:57,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:57,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:57,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:57,336 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:57,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 16:02:57,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:02:57,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:57,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:02:57,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958989947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:57,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-08 16:02:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264448784] [2021-10-08 16:02:57,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:02:57,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:02:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:02:57,454 INFO L87 Difference]: Start difference. First operand 319 states and 934 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:57,521 INFO L93 Difference]: Finished difference Result 536 states and 1409 transitions. [2021-10-08 16:02:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:02:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:02:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:57,526 INFO L225 Difference]: With dead ends: 536 [2021-10-08 16:02:57,526 INFO L226 Difference]: Without dead ends: 536 [2021-10-08 16:02:57,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:02:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-08 16:02:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 351. [2021-10-08 16:02:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 344 states have (on average 3.0) internal successors, (1032), 350 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1032 transitions. [2021-10-08 16:02:57,543 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1032 transitions. Word has length 12 [2021-10-08 16:02:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:57,543 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 1032 transitions. [2021-10-08 16:02:57,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1032 transitions. [2021-10-08 16:02:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:02:57,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:57,545 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:57,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:57,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 16:02:57,760 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash 159354509, now seen corresponding path program 2 times [2021-10-08 16:02:57,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:57,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94970166] [2021-10-08 16:02:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:57,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:02:57,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:57,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94970166] [2021-10-08 16:02:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94970166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:57,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627289140] [2021-10-08 16:02:57,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:57,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:57,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:57,798 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:57,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 16:02:57,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:02:57,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:57,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:02:57,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:02:57,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627289140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:57,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:02:57,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-08 16:02:57,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076153038] [2021-10-08 16:02:57,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:57,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:57,913 INFO L87 Difference]: Start difference. First operand 351 states and 1032 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:57,923 INFO L93 Difference]: Finished difference Result 325 states and 920 transitions. [2021-10-08 16:02:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:02:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:57,926 INFO L225 Difference]: With dead ends: 325 [2021-10-08 16:02:57,927 INFO L226 Difference]: Without dead ends: 325 [2021-10-08 16:02:57,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:02:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-08 16:02:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 213. [2021-10-08 16:02:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 2.5336538461538463) internal successors, (527), 212 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 527 transitions. [2021-10-08 16:02:57,936 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 527 transitions. Word has length 12 [2021-10-08 16:02:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:57,937 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 527 transitions. [2021-10-08 16:02:57,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 527 transitions. [2021-10-08 16:02:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:02:57,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:57,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:57,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:58,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:02:58,152 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:58,155 INFO L82 PathProgramCache]: Analyzing trace with hash -204170577, now seen corresponding path program 1 times [2021-10-08 16:02:58,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:58,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43131831] [2021-10-08 16:02:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:58,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:58,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43131831] [2021-10-08 16:02:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43131831] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:58,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:02:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053502472] [2021-10-08 16:02:58,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:58,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:58,199 INFO L87 Difference]: Start difference. First operand 213 states and 527 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:58,211 INFO L93 Difference]: Finished difference Result 212 states and 526 transitions. [2021-10-08 16:02:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:02:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:58,213 INFO L225 Difference]: With dead ends: 212 [2021-10-08 16:02:58,214 INFO L226 Difference]: Without dead ends: 212 [2021-10-08 16:02:58,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-08 16:02:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-08 16:02:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 2.5288461538461537) internal successors, (526), 211 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 526 transitions. [2021-10-08 16:02:58,222 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 526 transitions. Word has length 13 [2021-10-08 16:02:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:58,222 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 526 transitions. [2021-10-08 16:02:58,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 526 transitions. [2021-10-08 16:02:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:02:58,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:58,224 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:58,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-08 16:02:58,224 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash -204170606, now seen corresponding path program 1 times [2021-10-08 16:02:58,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:58,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044175902] [2021-10-08 16:02:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:58,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:58,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044175902] [2021-10-08 16:02:58,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044175902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:02:58,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:02:58,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:02:58,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972633007] [2021-10-08 16:02:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:02:58,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:02:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:58,258 INFO L87 Difference]: Start difference. First operand 212 states and 526 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:58,267 INFO L93 Difference]: Finished difference Result 211 states and 525 transitions. [2021-10-08 16:02:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:02:58,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:02:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:58,269 INFO L225 Difference]: With dead ends: 211 [2021-10-08 16:02:58,269 INFO L226 Difference]: Without dead ends: 116 [2021-10-08 16:02:58,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:02:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-08 16:02:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-08 16:02:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 2.3628318584070795) internal successors, (267), 115 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 267 transitions. [2021-10-08 16:02:58,275 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 267 transitions. Word has length 13 [2021-10-08 16:02:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:58,275 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 267 transitions. [2021-10-08 16:02:58,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 267 transitions. [2021-10-08 16:02:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:02:58,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:58,276 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2021-10-08 16:02:58,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 16:02:58,276 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:58,277 INFO L82 PathProgramCache]: Analyzing trace with hash -716891050, now seen corresponding path program 9 times [2021-10-08 16:02:58,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:58,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039944413] [2021-10-08 16:02:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:58,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:58,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039944413] [2021-10-08 16:02:58,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039944413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:58,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291215131] [2021-10-08 16:02:58,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:02:58,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:58,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:58,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:58,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 16:02:58,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-08 16:02:58,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:58,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:02:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291215131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:58,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:58,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-08 16:02:58,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444983131] [2021-10-08 16:02:58,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:02:58,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:02:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:02:58,480 INFO L87 Difference]: Start difference. First operand 116 states and 267 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:58,526 INFO L93 Difference]: Finished difference Result 206 states and 473 transitions. [2021-10-08 16:02:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:02:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:02:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:58,528 INFO L225 Difference]: With dead ends: 206 [2021-10-08 16:02:58,528 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 16:02:58,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:02:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 16:02:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 124. [2021-10-08 16:02:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 2.3636363636363638) internal successors, (286), 123 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 286 transitions. [2021-10-08 16:02:58,533 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 286 transitions. Word has length 13 [2021-10-08 16:02:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 286 transitions. [2021-10-08 16:02:58,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 286 transitions. [2021-10-08 16:02:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:02:58,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:58,535 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-08 16:02:58,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:58,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:58,749 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash -748783473, now seen corresponding path program 10 times [2021-10-08 16:02:58,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:58,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300196795] [2021-10-08 16:02:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:58,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:58,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300196795] [2021-10-08 16:02:58,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300196795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:58,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249894681] [2021-10-08 16:02:58,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:58,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:58,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:58,854 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:58,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 16:02:58,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:58,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:58,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:02:58,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249894681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:58,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:58,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-08 16:02:58,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385358441] [2021-10-08 16:02:58,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:02:58,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:02:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:02:58,987 INFO L87 Difference]: Start difference. First operand 124 states and 286 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:59,042 INFO L93 Difference]: Finished difference Result 222 states and 511 transitions. [2021-10-08 16:02:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:02:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:02:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:59,044 INFO L225 Difference]: With dead ends: 222 [2021-10-08 16:02:59,044 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 16:02:59,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:02:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 16:02:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 132. [2021-10-08 16:02:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 2.364341085271318) internal successors, (305), 131 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 305 transitions. [2021-10-08 16:02:59,051 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 305 transitions. Word has length 14 [2021-10-08 16:02:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:59,051 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 305 transitions. [2021-10-08 16:02:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 305 transitions. [2021-10-08 16:02:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:02:59,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:59,052 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2021-10-08 16:02:59,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:59,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:59,266 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1737448586, now seen corresponding path program 11 times [2021-10-08 16:02:59,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:59,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065630097] [2021-10-08 16:02:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:59,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:59,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:59,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065630097] [2021-10-08 16:02:59,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065630097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:59,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393042769] [2021-10-08 16:02:59,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:59,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:59,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:59,409 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:59,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 16:02:59,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-08 16:02:59,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:59,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:02:59,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:59,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393042769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:59,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:59,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-08 16:02:59,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92050980] [2021-10-08 16:02:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:02:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:02:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:02:59,553 INFO L87 Difference]: Start difference. First operand 132 states and 305 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:59,613 INFO L93 Difference]: Finished difference Result 238 states and 549 transitions. [2021-10-08 16:02:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:02:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:02:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:59,615 INFO L225 Difference]: With dead ends: 238 [2021-10-08 16:02:59,615 INFO L226 Difference]: Without dead ends: 184 [2021-10-08 16:02:59,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:02:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-08 16:02:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 140. [2021-10-08 16:02:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 137 states have (on average 2.3649635036496353) internal successors, (324), 139 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 324 transitions. [2021-10-08 16:02:59,621 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 324 transitions. Word has length 15 [2021-10-08 16:02:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:59,622 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 324 transitions. [2021-10-08 16:02:59,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 324 transitions. [2021-10-08 16:02:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:02:59,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:59,623 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2021-10-08 16:02:59,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:59,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-08 16:02:59,838 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:02:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1973671279, now seen corresponding path program 12 times [2021-10-08 16:02:59,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:59,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068171925] [2021-10-08 16:02:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:59,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:59,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:59,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068171925] [2021-10-08 16:02:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068171925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:59,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431645032] [2021-10-08 16:02:59,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:02:59,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:59,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:59,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 16:03:00,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 16:03:00,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:00,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:03:00,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:00,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431645032] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:00,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:00,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-08 16:03:00,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174476553] [2021-10-08 16:03:00,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:03:00,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:03:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:03:00,138 INFO L87 Difference]: Start difference. First operand 140 states and 324 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:00,200 INFO L93 Difference]: Finished difference Result 254 states and 587 transitions. [2021-10-08 16:03:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:03:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:03:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:00,203 INFO L225 Difference]: With dead ends: 254 [2021-10-08 16:03:00,203 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 16:03:00,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:03:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 16:03:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 148. [2021-10-08 16:03:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 145 states have (on average 2.3655172413793104) internal successors, (343), 147 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 343 transitions. [2021-10-08 16:03:00,209 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 343 transitions. Word has length 16 [2021-10-08 16:03:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:00,209 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 343 transitions. [2021-10-08 16:03:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 343 transitions. [2021-10-08 16:03:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:03:00,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:00,211 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2021-10-08 16:03:00,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:00,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:00,427 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1054270102, now seen corresponding path program 13 times [2021-10-08 16:03:00,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:00,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319017875] [2021-10-08 16:03:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:00,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:00,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:00,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319017875] [2021-10-08 16:03:00,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319017875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:00,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922048726] [2021-10-08 16:03:00,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:00,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:00,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:00,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 16:03:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:00,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:03:00,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:00,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922048726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:00,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:00,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-08 16:03:00,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393199231] [2021-10-08 16:03:00,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:03:00,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:03:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:03:00,712 INFO L87 Difference]: Start difference. First operand 148 states and 343 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:00,781 INFO L93 Difference]: Finished difference Result 270 states and 625 transitions. [2021-10-08 16:03:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:03:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:03:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:00,783 INFO L225 Difference]: With dead ends: 270 [2021-10-08 16:03:00,783 INFO L226 Difference]: Without dead ends: 208 [2021-10-08 16:03:00,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:03:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-08 16:03:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2021-10-08 16:03:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 2.366013071895425) internal successors, (362), 155 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 362 transitions. [2021-10-08 16:03:00,790 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 362 transitions. Word has length 17 [2021-10-08 16:03:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:00,791 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 362 transitions. [2021-10-08 16:03:00,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 362 transitions. [2021-10-08 16:03:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:00,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:00,792 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2021-10-08 16:03:00,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:01,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:01,007 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1677362609, now seen corresponding path program 14 times [2021-10-08 16:03:01,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:01,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783236445] [2021-10-08 16:03:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:01,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:01,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:01,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783236445] [2021-10-08 16:03:01,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783236445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789124457] [2021-10-08 16:03:01,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:01,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:01,158 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:01,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 16:03:01,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:01,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:03:01,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:01,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789124457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-08 16:03:01,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667021878] [2021-10-08 16:03:01,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:03:01,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:03:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:03:01,323 INFO L87 Difference]: Start difference. First operand 156 states and 362 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:01,395 INFO L93 Difference]: Finished difference Result 286 states and 663 transitions. [2021-10-08 16:03:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:03:01,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:01,397 INFO L225 Difference]: With dead ends: 286 [2021-10-08 16:03:01,397 INFO L226 Difference]: Without dead ends: 220 [2021-10-08 16:03:01,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:03:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-08 16:03:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 164. [2021-10-08 16:03:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 2.3664596273291925) internal successors, (381), 163 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 381 transitions. [2021-10-08 16:03:01,404 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 381 transitions. Word has length 18 [2021-10-08 16:03:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:01,404 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 381 transitions. [2021-10-08 16:03:01,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 381 transitions. [2021-10-08 16:03:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:03:01,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:01,405 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-08 16:03:01,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:01,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:03:01,620 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:01,621 INFO L82 PathProgramCache]: Analyzing trace with hash -458630730, now seen corresponding path program 15 times [2021-10-08 16:03:01,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:01,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158291290] [2021-10-08 16:03:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:01,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:01,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:01,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158291290] [2021-10-08 16:03:01,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158291290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172660577] [2021-10-08 16:03:01,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:01,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:01,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:01,803 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:01,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 16:03:01,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-08 16:03:01,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:03:01,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:01,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172660577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:01,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-08 16:03:01,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124408859] [2021-10-08 16:03:01,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:03:01,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:03:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:03:01,986 INFO L87 Difference]: Start difference. First operand 164 states and 381 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:02,062 INFO L93 Difference]: Finished difference Result 302 states and 701 transitions. [2021-10-08 16:03:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:03:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:03:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:02,064 INFO L225 Difference]: With dead ends: 302 [2021-10-08 16:03:02,065 INFO L226 Difference]: Without dead ends: 232 [2021-10-08 16:03:02,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:03:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-08 16:03:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 172. [2021-10-08 16:03:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 2.366863905325444) internal successors, (400), 171 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 400 transitions. [2021-10-08 16:03:02,071 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 400 transitions. Word has length 19 [2021-10-08 16:03:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:02,072 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 400 transitions. [2021-10-08 16:03:02,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 400 transitions. [2021-10-08 16:03:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:03:02,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:02,073 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2021-10-08 16:03:02,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:02,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:03:02,287 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1332648145, now seen corresponding path program 16 times [2021-10-08 16:03:02,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:02,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808296679] [2021-10-08 16:03:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:02,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:02,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:02,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808296679] [2021-10-08 16:03:02,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808296679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:02,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409489498] [2021-10-08 16:03:02,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:02,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:02,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:02,469 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:02,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 16:03:02,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:02,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:02,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:03:02,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:02,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409489498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:02,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:02,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-08 16:03:02,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310472144] [2021-10-08 16:03:02,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:03:02,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:03:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:03:02,658 INFO L87 Difference]: Start difference. First operand 172 states and 400 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:02,743 INFO L93 Difference]: Finished difference Result 318 states and 739 transitions. [2021-10-08 16:03:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:03:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:03:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:02,745 INFO L225 Difference]: With dead ends: 318 [2021-10-08 16:03:02,745 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 16:03:02,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:03:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 16:03:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 180. [2021-10-08 16:03:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 177 states have (on average 2.367231638418079) internal successors, (419), 179 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 419 transitions. [2021-10-08 16:03:02,753 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 419 transitions. Word has length 20 [2021-10-08 16:03:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:02,753 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 419 transitions. [2021-10-08 16:03:02,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 419 transitions. [2021-10-08 16:03:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:03:02,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:02,754 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2021-10-08 16:03:02,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:02,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:03:02,968 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1637583062, now seen corresponding path program 17 times [2021-10-08 16:03:02,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:02,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490411762] [2021-10-08 16:03:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:02,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:03,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:03,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490411762] [2021-10-08 16:03:03,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490411762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:03,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769004367] [2021-10-08 16:03:03,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:03,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:03,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:03,172 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:03,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 16:03:03,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:03:03,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:03,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:03:03,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769004367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:03,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:03,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-08 16:03:03,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253329742] [2021-10-08 16:03:03,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:03:03,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:03,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:03:03,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:03:03,368 INFO L87 Difference]: Start difference. First operand 180 states and 419 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:03,464 INFO L93 Difference]: Finished difference Result 334 states and 777 transitions. [2021-10-08 16:03:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:03:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:03:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:03,466 INFO L225 Difference]: With dead ends: 334 [2021-10-08 16:03:03,466 INFO L226 Difference]: Without dead ends: 256 [2021-10-08 16:03:03,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:03:03,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-08 16:03:03,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 188. [2021-10-08 16:03:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 2.3675675675675674) internal successors, (438), 187 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 438 transitions. [2021-10-08 16:03:03,474 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 438 transitions. Word has length 21 [2021-10-08 16:03:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:03,475 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 438 transitions. [2021-10-08 16:03:03,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 438 transitions. [2021-10-08 16:03:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:03:03,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:03,476 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2021-10-08 16:03:03,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:03,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:03:03,691 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash -774530033, now seen corresponding path program 18 times [2021-10-08 16:03:03,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:03,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254401835] [2021-10-08 16:03:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:03,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:03,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:03,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254401835] [2021-10-08 16:03:03,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254401835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:03,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423094096] [2021-10-08 16:03:03,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:03,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:03,926 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:03,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 16:03:04,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-08 16:03:04,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:03:04,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:04,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423094096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:04,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:04,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-08 16:03:04,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994629065] [2021-10-08 16:03:04,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:03:04,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:03:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:03:04,146 INFO L87 Difference]: Start difference. First operand 188 states and 438 transitions. Second operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:04,244 INFO L93 Difference]: Finished difference Result 350 states and 815 transitions. [2021-10-08 16:03:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:03:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:03:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:04,247 INFO L225 Difference]: With dead ends: 350 [2021-10-08 16:03:04,247 INFO L226 Difference]: Without dead ends: 268 [2021-10-08 16:03:04,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 154.4ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:03:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-08 16:03:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2021-10-08 16:03:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 2.3678756476683938) internal successors, (457), 195 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 457 transitions. [2021-10-08 16:03:04,255 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 457 transitions. Word has length 22 [2021-10-08 16:03:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:04,256 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 457 transitions. [2021-10-08 16:03:04,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 457 transitions. [2021-10-08 16:03:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:03:04,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:04,257 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2021-10-08 16:03:04,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:04,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:04,471 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1759375350, now seen corresponding path program 19 times [2021-10-08 16:03:04,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:04,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520477859] [2021-10-08 16:03:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:04,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:04,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520477859] [2021-10-08 16:03:04,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520477859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381846093] [2021-10-08 16:03:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:04,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:04,711 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:04,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 16:03:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:04,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:03:04,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:04,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381846093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:04,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:04,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-08 16:03:04,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53647407] [2021-10-08 16:03:04,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:03:04,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:03:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:03:04,917 INFO L87 Difference]: Start difference. First operand 196 states and 457 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:05,029 INFO L93 Difference]: Finished difference Result 366 states and 853 transitions. [2021-10-08 16:03:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:03:05,030 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:03:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:05,032 INFO L225 Difference]: With dead ends: 366 [2021-10-08 16:03:05,032 INFO L226 Difference]: Without dead ends: 280 [2021-10-08 16:03:05,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:03:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-08 16:03:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 204. [2021-10-08 16:03:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 2.3681592039800994) internal successors, (476), 203 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 476 transitions. [2021-10-08 16:03:05,040 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 476 transitions. Word has length 23 [2021-10-08 16:03:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 476 transitions. [2021-10-08 16:03:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 476 transitions. [2021-10-08 16:03:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:03:05,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:05,042 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2021-10-08 16:03:05,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-08 16:03:05,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-08 16:03:05,256 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:05,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1293936401, now seen corresponding path program 20 times [2021-10-08 16:03:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:05,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683652172] [2021-10-08 16:03:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:05,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:05,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:05,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683652172] [2021-10-08 16:03:05,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683652172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:05,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200104920] [2021-10-08 16:03:05,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:05,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:05,508 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:05,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 16:03:05,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:05,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:05,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:03:05,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:05,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200104920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:05,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:05,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-08 16:03:05,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869573075] [2021-10-08 16:03:05,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:03:05,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:03:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:03:05,759 INFO L87 Difference]: Start difference. First operand 204 states and 476 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:05,886 INFO L93 Difference]: Finished difference Result 382 states and 891 transitions. [2021-10-08 16:03:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:03:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:03:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:05,889 INFO L225 Difference]: With dead ends: 382 [2021-10-08 16:03:05,889 INFO L226 Difference]: Without dead ends: 292 [2021-10-08 16:03:05,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.9ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:03:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-08 16:03:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 212. [2021-10-08 16:03:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 2.3684210526315788) internal successors, (495), 211 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 495 transitions. [2021-10-08 16:03:05,899 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 495 transitions. Word has length 24 [2021-10-08 16:03:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:05,899 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 495 transitions. [2021-10-08 16:03:05,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 495 transitions. [2021-10-08 16:03:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:03:05,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:05,901 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2021-10-08 16:03:05,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:06,116 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1457320170, now seen corresponding path program 21 times [2021-10-08 16:03:06,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:06,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282660399] [2021-10-08 16:03:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:06,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:06,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:06,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282660399] [2021-10-08 16:03:06,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282660399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:06,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161449000] [2021-10-08 16:03:06,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:06,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:06,386 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:06,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 16:03:06,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-08 16:03:06,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:06,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:03:06,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161449000] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:06,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:06,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-08 16:03:06,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338362983] [2021-10-08 16:03:06,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:03:06,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:03:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:03:06,625 INFO L87 Difference]: Start difference. First operand 212 states and 495 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:06,745 INFO L93 Difference]: Finished difference Result 398 states and 929 transitions. [2021-10-08 16:03:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:03:06,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:03:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:06,748 INFO L225 Difference]: With dead ends: 398 [2021-10-08 16:03:06,748 INFO L226 Difference]: Without dead ends: 304 [2021-10-08 16:03:06,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.3ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:03:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-08 16:03:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 220. [2021-10-08 16:03:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 2.3686635944700463) internal successors, (514), 219 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 514 transitions. [2021-10-08 16:03:06,756 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 514 transitions. Word has length 25 [2021-10-08 16:03:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 514 transitions. [2021-10-08 16:03:06,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 514 transitions. [2021-10-08 16:03:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:03:06,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:06,758 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-08 16:03:06,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:06,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:06,973 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:06,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2067717583, now seen corresponding path program 22 times [2021-10-08 16:03:06,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:06,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101487714] [2021-10-08 16:03:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:06,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:07,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:07,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101487714] [2021-10-08 16:03:07,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101487714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:07,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366267831] [2021-10-08 16:03:07,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:07,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:07,258 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:07,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 16:03:07,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:07,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:07,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:03:07,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:07,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366267831] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:07,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:07,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-08 16:03:07,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492670779] [2021-10-08 16:03:07,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:03:07,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:03:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:03:07,516 INFO L87 Difference]: Start difference. First operand 220 states and 514 transitions. Second operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:07,694 INFO L93 Difference]: Finished difference Result 414 states and 967 transitions. [2021-10-08 16:03:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:03:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:03:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:07,697 INFO L225 Difference]: With dead ends: 414 [2021-10-08 16:03:07,697 INFO L226 Difference]: Without dead ends: 316 [2021-10-08 16:03:07,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.2ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:03:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-08 16:03:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 228. [2021-10-08 16:03:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.368888888888889) internal successors, (533), 227 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 533 transitions. [2021-10-08 16:03:07,709 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 533 transitions. Word has length 26 [2021-10-08 16:03:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:07,709 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 533 transitions. [2021-10-08 16:03:07,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 533 transitions. [2021-10-08 16:03:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:03:07,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:07,711 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2021-10-08 16:03:07,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:07,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 16:03:07,926 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash -325261770, now seen corresponding path program 23 times [2021-10-08 16:03:07,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:07,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397795190] [2021-10-08 16:03:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:07,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:08,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:08,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397795190] [2021-10-08 16:03:08,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397795190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:08,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002342922] [2021-10-08 16:03:08,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:08,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:08,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:08,279 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:03:08,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-08 16:03:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:03:08,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002342922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:08,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:08,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-08 16:03:08,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203340209] [2021-10-08 16:03:08,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:03:08,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:03:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:03:08,528 INFO L87 Difference]: Start difference. First operand 228 states and 533 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:08,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:08,661 INFO L93 Difference]: Finished difference Result 430 states and 1005 transitions. [2021-10-08 16:03:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:03:08,662 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 16:03:08,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:08,664 INFO L225 Difference]: With dead ends: 430 [2021-10-08 16:03:08,664 INFO L226 Difference]: Without dead ends: 328 [2021-10-08 16:03:08,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 260.1ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:03:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-08 16:03:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 236. [2021-10-08 16:03:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 2.369098712446352) internal successors, (552), 235 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 552 transitions. [2021-10-08 16:03:08,674 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 552 transitions. Word has length 27 [2021-10-08 16:03:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:08,674 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 552 transitions. [2021-10-08 16:03:08,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 552 transitions. [2021-10-08 16:03:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:03:08,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:08,676 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2021-10-08 16:03:08,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:08,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-08 16:03:08,890 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:08,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:08,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1493177681, now seen corresponding path program 24 times [2021-10-08 16:03:08,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:08,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611468324] [2021-10-08 16:03:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:08,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:09,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:09,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611468324] [2021-10-08 16:03:09,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611468324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:09,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138059734] [2021-10-08 16:03:09,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:09,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:09,235 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:09,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 16:03:09,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-08 16:03:09,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:09,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:03:09,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:09,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138059734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:09,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:09,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-08 16:03:09,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128174884] [2021-10-08 16:03:09,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:03:09,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:03:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:03:09,517 INFO L87 Difference]: Start difference. First operand 236 states and 552 transitions. Second operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:09,664 INFO L93 Difference]: Finished difference Result 446 states and 1043 transitions. [2021-10-08 16:03:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:03:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 16:03:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:09,667 INFO L225 Difference]: With dead ends: 446 [2021-10-08 16:03:09,667 INFO L226 Difference]: Without dead ends: 340 [2021-10-08 16:03:09,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 264.8ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:03:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-08 16:03:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 244. [2021-10-08 16:03:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 241 states have (on average 2.3692946058091287) internal successors, (571), 243 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 571 transitions. [2021-10-08 16:03:09,705 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 571 transitions. Word has length 28 [2021-10-08 16:03:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:09,706 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 571 transitions. [2021-10-08 16:03:09,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 571 transitions. [2021-10-08 16:03:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:03:09,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:09,707 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2021-10-08 16:03:09,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:09,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:09,923 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:09,923 INFO L82 PathProgramCache]: Analyzing trace with hash 956134742, now seen corresponding path program 25 times [2021-10-08 16:03:09,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:09,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381079817] [2021-10-08 16:03:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:09,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:10,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:10,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381079817] [2021-10-08 16:03:10,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381079817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:10,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134276838] [2021-10-08 16:03:10,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:10,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:10,265 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:10,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 16:03:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:10,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:03:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:10,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134276838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:10,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:10,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-08 16:03:10,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969591227] [2021-10-08 16:03:10,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:03:10,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:03:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:03:10,529 INFO L87 Difference]: Start difference. First operand 244 states and 571 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:10,679 INFO L93 Difference]: Finished difference Result 462 states and 1081 transitions. [2021-10-08 16:03:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:03:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 16:03:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:10,682 INFO L225 Difference]: With dead ends: 462 [2021-10-08 16:03:10,683 INFO L226 Difference]: Without dead ends: 352 [2021-10-08 16:03:10,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 262.8ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:03:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-08 16:03:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 252. [2021-10-08 16:03:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 2.3694779116465865) internal successors, (590), 251 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 590 transitions. [2021-10-08 16:03:10,692 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 590 transitions. Word has length 29 [2021-10-08 16:03:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:10,692 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 590 transitions. [2021-10-08 16:03:10,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 590 transitions. [2021-10-08 16:03:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:03:10,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:10,694 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2021-10-08 16:03:10,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-08 16:03:10,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-08 16:03:10,907 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash -424591473, now seen corresponding path program 26 times [2021-10-08 16:03:10,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:10,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434048130] [2021-10-08 16:03:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:10,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:11,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:11,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434048130] [2021-10-08 16:03:11,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434048130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:11,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898743403] [2021-10-08 16:03:11,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:11,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:11,300 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:11,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 16:03:11,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:11,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:11,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:03:11,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:11,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898743403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:11,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:11,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-10-08 16:03:11,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973053576] [2021-10-08 16:03:11,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:03:11,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:03:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:03:11,575 INFO L87 Difference]: Start difference. First operand 252 states and 590 transitions. Second operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:11,774 INFO L93 Difference]: Finished difference Result 478 states and 1119 transitions. [2021-10-08 16:03:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:03:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 16:03:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:11,777 INFO L225 Difference]: With dead ends: 478 [2021-10-08 16:03:11,777 INFO L226 Difference]: Without dead ends: 364 [2021-10-08 16:03:11,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 305.7ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:03:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-08 16:03:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 260. [2021-10-08 16:03:11,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 2.369649805447471) internal successors, (609), 259 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 609 transitions. [2021-10-08 16:03:11,788 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 609 transitions. Word has length 30 [2021-10-08 16:03:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:11,788 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 609 transitions. [2021-10-08 16:03:11,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 609 transitions. [2021-10-08 16:03:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:03:11,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:11,789 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2021-10-08 16:03:11,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 16:03:12,004 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash -277431178, now seen corresponding path program 27 times [2021-10-08 16:03:12,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:12,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893660384] [2021-10-08 16:03:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:12,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:12,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:12,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893660384] [2021-10-08 16:03:12,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893660384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:12,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553942123] [2021-10-08 16:03:12,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:12,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:12,415 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:12,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 16:03:12,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-08 16:03:12,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:12,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:03:12,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:12,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553942123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:12,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:12,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-10-08 16:03:12,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112990616] [2021-10-08 16:03:12,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:03:12,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:03:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:03:12,731 INFO L87 Difference]: Start difference. First operand 260 states and 609 transitions. Second operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:12,902 INFO L93 Difference]: Finished difference Result 494 states and 1157 transitions. [2021-10-08 16:03:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:03:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 16:03:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:12,906 INFO L225 Difference]: With dead ends: 494 [2021-10-08 16:03:12,906 INFO L226 Difference]: Without dead ends: 376 [2021-10-08 16:03:12,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 326.9ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:03:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-08 16:03:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 268. [2021-10-08 16:03:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 265 states have (on average 2.369811320754717) internal successors, (628), 267 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 628 transitions. [2021-10-08 16:03:12,915 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 628 transitions. Word has length 31 [2021-10-08 16:03:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:12,915 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 628 transitions. [2021-10-08 16:03:12,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 628 transitions. [2021-10-08 16:03:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:03:12,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:12,917 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2021-10-08 16:03:12,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:13,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-08 16:03:13,131 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash -10429329, now seen corresponding path program 28 times [2021-10-08 16:03:13,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:13,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670519487] [2021-10-08 16:03:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:13,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:13,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:13,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670519487] [2021-10-08 16:03:13,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670519487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:13,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944296570] [2021-10-08 16:03:13,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:13,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:13,568 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:13,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 16:03:13,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:03:13,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:13,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944296570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:13,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:13,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-08 16:03:13,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784529821] [2021-10-08 16:03:13,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:03:13,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:03:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:03:13,878 INFO L87 Difference]: Start difference. First operand 268 states and 628 transitions. Second operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:14,074 INFO L93 Difference]: Finished difference Result 510 states and 1195 transitions. [2021-10-08 16:03:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:03:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:03:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:14,079 INFO L225 Difference]: With dead ends: 510 [2021-10-08 16:03:14,079 INFO L226 Difference]: Without dead ends: 388 [2021-10-08 16:03:14,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 346.0ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:03:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-08 16:03:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 276. [2021-10-08 16:03:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 273 states have (on average 2.36996336996337) internal successors, (647), 275 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 647 transitions. [2021-10-08 16:03:14,089 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 647 transitions. Word has length 32 [2021-10-08 16:03:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:14,090 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 647 transitions. [2021-10-08 16:03:14,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 647 transitions. [2021-10-08 16:03:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:03:14,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:14,091 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2021-10-08 16:03:14,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:14,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 16:03:14,307 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -323306602, now seen corresponding path program 29 times [2021-10-08 16:03:14,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:14,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138391585] [2021-10-08 16:03:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:14,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:14,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:14,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138391585] [2021-10-08 16:03:14,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138391585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:14,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928679147] [2021-10-08 16:03:14,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:14,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:14,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:14,730 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:14,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 16:03:14,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-08 16:03:14,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:14,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:03:14,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:15,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928679147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:15,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:15,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-08 16:03:15,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651130640] [2021-10-08 16:03:15,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:03:15,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:03:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:03:15,061 INFO L87 Difference]: Start difference. First operand 276 states and 647 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:15,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:15,274 INFO L93 Difference]: Finished difference Result 526 states and 1233 transitions. [2021-10-08 16:03:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:03:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-08 16:03:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:15,277 INFO L225 Difference]: With dead ends: 526 [2021-10-08 16:03:15,277 INFO L226 Difference]: Without dead ends: 400 [2021-10-08 16:03:15,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 332.8ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:03:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-08 16:03:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 284. [2021-10-08 16:03:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.3701067615658364) internal successors, (666), 283 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 666 transitions. [2021-10-08 16:03:15,289 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 666 transitions. Word has length 33 [2021-10-08 16:03:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:15,289 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 666 transitions. [2021-10-08 16:03:15,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 666 transitions. [2021-10-08 16:03:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:03:15,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:15,291 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2021-10-08 16:03:15,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-08 16:03:15,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:15,504 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1432567473, now seen corresponding path program 30 times [2021-10-08 16:03:15,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:15,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060524930] [2021-10-08 16:03:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:15,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:15,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:15,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060524930] [2021-10-08 16:03:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060524930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:15,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901422784] [2021-10-08 16:03:15,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:15,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:16,001 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:16,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 16:03:16,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-08 16:03:16,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:16,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:03:16,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:16,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901422784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:16,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:16,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-10-08 16:03:16,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035267691] [2021-10-08 16:03:16,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:03:16,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:03:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:03:16,351 INFO L87 Difference]: Start difference. First operand 284 states and 666 transitions. Second operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:16,586 INFO L93 Difference]: Finished difference Result 542 states and 1271 transitions. [2021-10-08 16:03:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:03:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:03:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:16,589 INFO L225 Difference]: With dead ends: 542 [2021-10-08 16:03:16,589 INFO L226 Difference]: Without dead ends: 412 [2021-10-08 16:03:16,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 404.3ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:03:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-08 16:03:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 292. [2021-10-08 16:03:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 2.370242214532872) internal successors, (685), 291 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 685 transitions. [2021-10-08 16:03:16,600 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 685 transitions. Word has length 34 [2021-10-08 16:03:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:16,600 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 685 transitions. [2021-10-08 16:03:16,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 685 transitions. [2021-10-08 16:03:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:03:16,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:16,602 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2021-10-08 16:03:16,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:16,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-08 16:03:16,818 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:16,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1459916106, now seen corresponding path program 31 times [2021-10-08 16:03:16,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:16,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769664935] [2021-10-08 16:03:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:16,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:17,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:17,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769664935] [2021-10-08 16:03:17,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769664935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:17,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326917336] [2021-10-08 16:03:17,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:17,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:17,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:17,334 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:17,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 16:03:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:17,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:03:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:17,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326917336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:17,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:17,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-10-08 16:03:17,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873576057] [2021-10-08 16:03:17,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 16:03:17,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:17,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 16:03:17,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:03:17,661 INFO L87 Difference]: Start difference. First operand 292 states and 685 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:17,874 INFO L93 Difference]: Finished difference Result 558 states and 1309 transitions. [2021-10-08 16:03:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:03:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:03:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:17,877 INFO L225 Difference]: With dead ends: 558 [2021-10-08 16:03:17,878 INFO L226 Difference]: Without dead ends: 424 [2021-10-08 16:03:17,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.0ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:03:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-08 16:03:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 300. [2021-10-08 16:03:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 297 states have (on average 2.3703703703703702) internal successors, (704), 299 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 704 transitions. [2021-10-08 16:03:17,889 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 704 transitions. Word has length 35 [2021-10-08 16:03:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:17,889 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 704 transitions. [2021-10-08 16:03:17,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 704 transitions. [2021-10-08 16:03:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-08 16:03:17,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:17,891 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2021-10-08 16:03:17,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:18,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:18,107 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1987243567, now seen corresponding path program 32 times [2021-10-08 16:03:18,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:18,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137610263] [2021-10-08 16:03:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:18,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:18,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:18,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137610263] [2021-10-08 16:03:18,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137610263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:18,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369623482] [2021-10-08 16:03:18,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:18,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:18,640 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:18,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 16:03:18,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:18,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:18,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:03:18,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:19,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369623482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:19,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:19,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-08 16:03:19,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065412537] [2021-10-08 16:03:19,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:03:19,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:03:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:03:19,003 INFO L87 Difference]: Start difference. First operand 300 states and 704 transitions. Second operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:19,216 INFO L93 Difference]: Finished difference Result 574 states and 1347 transitions. [2021-10-08 16:03:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:03:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-08 16:03:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:19,220 INFO L225 Difference]: With dead ends: 574 [2021-10-08 16:03:19,220 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 16:03:19,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 441.3ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:03:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 16:03:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 308. [2021-10-08 16:03:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 305 states have (on average 2.3704918032786884) internal successors, (723), 307 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 723 transitions. [2021-10-08 16:03:19,232 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 723 transitions. Word has length 36 [2021-10-08 16:03:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:19,232 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 723 transitions. [2021-10-08 16:03:19,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 723 transitions. [2021-10-08 16:03:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 16:03:19,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:19,234 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2021-10-08 16:03:19,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:19,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-08 16:03:19,448 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1475011030, now seen corresponding path program 33 times [2021-10-08 16:03:19,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:19,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967580608] [2021-10-08 16:03:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:19,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:20,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:20,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967580608] [2021-10-08 16:03:20,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967580608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:20,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306355128] [2021-10-08 16:03:20,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:20,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:20,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:20,027 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:20,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 16:03:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-08 16:03:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:03:20,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:20,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306355128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:20,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:20,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-08 16:03:20,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933833946] [2021-10-08 16:03:20,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:03:20,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:03:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:03:20,428 INFO L87 Difference]: Start difference. First operand 308 states and 723 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:20,705 INFO L93 Difference]: Finished difference Result 590 states and 1385 transitions. [2021-10-08 16:03:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:03:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-08 16:03:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:20,709 INFO L225 Difference]: With dead ends: 590 [2021-10-08 16:03:20,709 INFO L226 Difference]: Without dead ends: 448 [2021-10-08 16:03:20,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 469.3ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:03:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-08 16:03:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 316. [2021-10-08 16:03:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 2.3706070287539935) internal successors, (742), 315 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 742 transitions. [2021-10-08 16:03:20,720 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 742 transitions. Word has length 37 [2021-10-08 16:03:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:20,720 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 742 transitions. [2021-10-08 16:03:20,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 742 transitions. [2021-10-08 16:03:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:03:20,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:20,722 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2021-10-08 16:03:20,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-08 16:03:20,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:20,938 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:20,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1519295729, now seen corresponding path program 34 times [2021-10-08 16:03:20,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:20,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682775562] [2021-10-08 16:03:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:20,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:21,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:21,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682775562] [2021-10-08 16:03:21,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682775562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:21,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905736761] [2021-10-08 16:03:21,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:21,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:21,540 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:21,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 16:03:21,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:21,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:21,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:03:21,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:21,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905736761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:21,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:21,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-10-08 16:03:21,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186390852] [2021-10-08 16:03:21,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-08 16:03:21,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:21,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-08 16:03:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:03:21,945 INFO L87 Difference]: Start difference. First operand 316 states and 742 transitions. Second operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:22,190 INFO L93 Difference]: Finished difference Result 606 states and 1423 transitions. [2021-10-08 16:03:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:03:22,191 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 16:03:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:22,196 INFO L225 Difference]: With dead ends: 606 [2021-10-08 16:03:22,196 INFO L226 Difference]: Without dead ends: 460 [2021-10-08 16:03:22,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 506.0ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:03:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-08 16:03:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 324. [2021-10-08 16:03:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 321 states have (on average 2.370716510903427) internal successors, (761), 323 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 761 transitions. [2021-10-08 16:03:22,210 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 761 transitions. Word has length 38 [2021-10-08 16:03:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:22,210 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 761 transitions. [2021-10-08 16:03:22,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 761 transitions. [2021-10-08 16:03:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 16:03:22,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:22,212 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2021-10-08 16:03:22,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-08 16:03:22,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:22,427 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 146475254, now seen corresponding path program 35 times [2021-10-08 16:03:22,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:22,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675105158] [2021-10-08 16:03:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:22,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675105158] [2021-10-08 16:03:23,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675105158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:23,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329036303] [2021-10-08 16:03:23,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:23,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:23,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:23,037 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:23,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 16:03:23,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-08 16:03:23,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:23,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:03:23,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:23,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329036303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:23,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:23,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-10-08 16:03:23,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585461405] [2021-10-08 16:03:23,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:03:23,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:03:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:03:23,470 INFO L87 Difference]: Start difference. First operand 324 states and 761 transitions. Second operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:23,740 INFO L93 Difference]: Finished difference Result 622 states and 1461 transitions. [2021-10-08 16:03:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:03:23,741 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 16:03:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:23,744 INFO L225 Difference]: With dead ends: 622 [2021-10-08 16:03:23,744 INFO L226 Difference]: Without dead ends: 472 [2021-10-08 16:03:23,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 498.8ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:03:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-08 16:03:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 332. [2021-10-08 16:03:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 329 states have (on average 2.370820668693009) internal successors, (780), 331 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 780 transitions. [2021-10-08 16:03:23,755 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 780 transitions. Word has length 39 [2021-10-08 16:03:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 780 transitions. [2021-10-08 16:03:23,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 780 transitions. [2021-10-08 16:03:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:03:23,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:23,756 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2021-10-08 16:03:23,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 16:03:23,972 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash 245768175, now seen corresponding path program 36 times [2021-10-08 16:03:23,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:23,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565700374] [2021-10-08 16:03:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:23,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:24,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:24,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565700374] [2021-10-08 16:03:24,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565700374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:24,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578770030] [2021-10-08 16:03:24,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:24,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:24,581 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:24,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 16:03:24,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-08 16:03:24,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:03:24,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578770030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:25,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:25,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-08 16:03:25,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017851992] [2021-10-08 16:03:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:03:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:03:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:03:25,019 INFO L87 Difference]: Start difference. First operand 332 states and 780 transitions. Second operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:25,283 INFO L93 Difference]: Finished difference Result 638 states and 1499 transitions. [2021-10-08 16:03:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:03:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 16:03:25,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:25,286 INFO L225 Difference]: With dead ends: 638 [2021-10-08 16:03:25,286 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 16:03:25,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 511.8ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:03:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 16:03:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 340. [2021-10-08 16:03:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 2.370919881305638) internal successors, (799), 339 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 799 transitions. [2021-10-08 16:03:25,298 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 799 transitions. Word has length 40 [2021-10-08 16:03:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:25,298 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 799 transitions. [2021-10-08 16:03:25,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 799 transitions. [2021-10-08 16:03:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-08 16:03:25,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:25,300 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2021-10-08 16:03:25,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:25,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-08 16:03:25,514 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:25,514 INFO L82 PathProgramCache]: Analyzing trace with hash -971118570, now seen corresponding path program 37 times [2021-10-08 16:03:25,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:25,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567777511] [2021-10-08 16:03:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:25,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:26,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:26,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567777511] [2021-10-08 16:03:26,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567777511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:26,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158738932] [2021-10-08 16:03:26,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:26,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:26,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:26,207 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:26,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 16:03:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:03:26,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:26,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158738932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:26,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:26,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-08 16:03:26,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037874183] [2021-10-08 16:03:26,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:03:26,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:03:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:03:26,639 INFO L87 Difference]: Start difference. First operand 340 states and 799 transitions. Second operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:26,921 INFO L93 Difference]: Finished difference Result 654 states and 1537 transitions. [2021-10-08 16:03:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 16:03:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-08 16:03:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:26,924 INFO L225 Difference]: With dead ends: 654 [2021-10-08 16:03:26,924 INFO L226 Difference]: Without dead ends: 496 [2021-10-08 16:03:26,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 586.8ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:03:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-08 16:03:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 348. [2021-10-08 16:03:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 2.371014492753623) internal successors, (818), 347 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 818 transitions. [2021-10-08 16:03:26,934 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 818 transitions. Word has length 41 [2021-10-08 16:03:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:26,935 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 818 transitions. [2021-10-08 16:03:26,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 818 transitions. [2021-10-08 16:03:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 16:03:26,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:26,936 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2021-10-08 16:03:26,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-08 16:03:27,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 16:03:27,151 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash -39902001, now seen corresponding path program 38 times [2021-10-08 16:03:27,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:27,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048625525] [2021-10-08 16:03:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:27,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:27,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:27,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048625525] [2021-10-08 16:03:27,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048625525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:27,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550544338] [2021-10-08 16:03:27,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:27,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:27,893 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:27,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 16:03:28,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:28,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:28,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:03:28,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:28,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550544338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:28,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:28,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-10-08 16:03:28,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996307492] [2021-10-08 16:03:28,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:03:28,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:03:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:03:28,346 INFO L87 Difference]: Start difference. First operand 348 states and 818 transitions. Second operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:28,658 INFO L93 Difference]: Finished difference Result 670 states and 1575 transitions. [2021-10-08 16:03:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:03:28,658 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 16:03:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:28,663 INFO L225 Difference]: With dead ends: 670 [2021-10-08 16:03:28,663 INFO L226 Difference]: Without dead ends: 508 [2021-10-08 16:03:28,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 638.1ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:03:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-08 16:03:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 356. [2021-10-08 16:03:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 353 states have (on average 2.3711048158640224) internal successors, (837), 355 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 837 transitions. [2021-10-08 16:03:28,676 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 837 transitions. Word has length 42 [2021-10-08 16:03:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:28,676 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 837 transitions. [2021-10-08 16:03:28,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 837 transitions. [2021-10-08 16:03:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:03:28,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:28,678 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1] [2021-10-08 16:03:28,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:28,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:28,893 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1236959434, now seen corresponding path program 39 times [2021-10-08 16:03:28,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:28,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437078132] [2021-10-08 16:03:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:28,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:29,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:29,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437078132] [2021-10-08 16:03:29,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437078132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:29,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063139229] [2021-10-08 16:03:29,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:29,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:29,612 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:29,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 16:03:29,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-08 16:03:29,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:03:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:30,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063139229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:30,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:30,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-10-08 16:03:30,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379121783] [2021-10-08 16:03:30,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-08 16:03:30,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-08 16:03:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:03:30,095 INFO L87 Difference]: Start difference. First operand 356 states and 837 transitions. Second operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:30,415 INFO L93 Difference]: Finished difference Result 686 states and 1613 transitions. [2021-10-08 16:03:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 16:03:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:03:30,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:30,420 INFO L225 Difference]: With dead ends: 686 [2021-10-08 16:03:30,420 INFO L226 Difference]: Without dead ends: 520 [2021-10-08 16:03:30,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 615.9ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:03:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-08 16:03:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 364. [2021-10-08 16:03:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 361 states have (on average 2.371191135734072) internal successors, (856), 363 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 856 transitions. [2021-10-08 16:03:30,432 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 856 transitions. Word has length 43 [2021-10-08 16:03:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:30,433 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 856 transitions. [2021-10-08 16:03:30,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 856 transitions. [2021-10-08 16:03:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:03:30,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:30,435 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1] [2021-10-08 16:03:30,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-08 16:03:30,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:30,649 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash 308965807, now seen corresponding path program 40 times [2021-10-08 16:03:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:30,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127804789] [2021-10-08 16:03:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:30,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:31,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:31,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127804789] [2021-10-08 16:03:31,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127804789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:31,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468688752] [2021-10-08 16:03:31,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:31,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:31,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:31,430 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:31,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 16:03:31,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:31,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:31,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:03:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:31,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468688752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:31,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:31,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-08 16:03:31,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371106813] [2021-10-08 16:03:31,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:03:31,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:03:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:03:31,906 INFO L87 Difference]: Start difference. First operand 364 states and 856 transitions. Second operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:32,206 INFO L93 Difference]: Finished difference Result 702 states and 1651 transitions. [2021-10-08 16:03:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:03:32,207 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:03:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:32,212 INFO L225 Difference]: With dead ends: 702 [2021-10-08 16:03:32,212 INFO L226 Difference]: Without dead ends: 532 [2021-10-08 16:03:32,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:03:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-08 16:03:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 372. [2021-10-08 16:03:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.3712737127371275) internal successors, (875), 371 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 875 transitions. [2021-10-08 16:03:32,223 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 875 transitions. Word has length 44 [2021-10-08 16:03:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:32,223 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 875 transitions. [2021-10-08 16:03:32,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 875 transitions. [2021-10-08 16:03:32,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-08 16:03:32,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:32,225 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1] [2021-10-08 16:03:32,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:32,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:32,440 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash 988008022, now seen corresponding path program 41 times [2021-10-08 16:03:32,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:32,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009125919] [2021-10-08 16:03:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:32,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:33,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:33,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009125919] [2021-10-08 16:03:33,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009125919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:33,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857462176] [2021-10-08 16:03:33,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:33,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:33,195 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:33,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 16:03:33,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-08 16:03:33,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:33,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:03:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:33,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857462176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:33,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:33,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-08 16:03:33,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693849060] [2021-10-08 16:03:33,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 16:03:33,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:33,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 16:03:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:03:33,724 INFO L87 Difference]: Start difference. First operand 372 states and 875 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:34,021 INFO L93 Difference]: Finished difference Result 718 states and 1689 transitions. [2021-10-08 16:03:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:03:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-08 16:03:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:34,024 INFO L225 Difference]: With dead ends: 718 [2021-10-08 16:03:34,025 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 16:03:34,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 647.3ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:03:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 16:03:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 380. [2021-10-08 16:03:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 377 states have (on average 2.3713527851458887) internal successors, (894), 379 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 894 transitions. [2021-10-08 16:03:34,035 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 894 transitions. Word has length 45 [2021-10-08 16:03:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 894 transitions. [2021-10-08 16:03:34,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 894 transitions. [2021-10-08 16:03:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 16:03:34,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:34,037 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1] [2021-10-08 16:03:34,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:34,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:34,251 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash 563480207, now seen corresponding path program 42 times [2021-10-08 16:03:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:34,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187087587] [2021-10-08 16:03:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:34,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:35,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:35,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187087587] [2021-10-08 16:03:35,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187087587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:35,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245488611] [2021-10-08 16:03:35,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:35,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:35,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:35,104 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:35,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 16:03:35,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-08 16:03:35,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:35,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:03:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:35,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245488611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:35,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:35,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-10-08 16:03:35,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528314247] [2021-10-08 16:03:35,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-08 16:03:35,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-08 16:03:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:03:35,631 INFO L87 Difference]: Start difference. First operand 380 states and 894 transitions. Second operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:36,119 INFO L93 Difference]: Finished difference Result 734 states and 1727 transitions. [2021-10-08 16:03:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:03:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-08 16:03:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:36,123 INFO L225 Difference]: With dead ends: 734 [2021-10-08 16:03:36,124 INFO L226 Difference]: Without dead ends: 556 [2021-10-08 16:03:36,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 744.9ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:03:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-08 16:03:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 388. [2021-10-08 16:03:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 2.3714285714285714) internal successors, (913), 387 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 913 transitions. [2021-10-08 16:03:36,135 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 913 transitions. Word has length 46 [2021-10-08 16:03:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:36,135 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 913 transitions. [2021-10-08 16:03:36,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 913 transitions. [2021-10-08 16:03:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:03:36,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:36,137 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1] [2021-10-08 16:03:36,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-08 16:03:36,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-08 16:03:36,352 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:36,353 INFO L82 PathProgramCache]: Analyzing trace with hash 288019830, now seen corresponding path program 43 times [2021-10-08 16:03:36,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:36,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356318417] [2021-10-08 16:03:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:36,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:37,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:37,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356318417] [2021-10-08 16:03:37,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356318417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:37,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286851056] [2021-10-08 16:03:37,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:37,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:37,244 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:37,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 16:03:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:37,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:03:37,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:37,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286851056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:37,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:37,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-10-08 16:03:37,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143851661] [2021-10-08 16:03:37,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-08 16:03:37,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-08 16:03:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:03:37,777 INFO L87 Difference]: Start difference. First operand 388 states and 913 transitions. Second operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:38,142 INFO L93 Difference]: Finished difference Result 750 states and 1765 transitions. [2021-10-08 16:03:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 16:03:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:03:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:38,146 INFO L225 Difference]: With dead ends: 750 [2021-10-08 16:03:38,147 INFO L226 Difference]: Without dead ends: 568 [2021-10-08 16:03:38,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 784.1ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:03:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-08 16:03:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 396. [2021-10-08 16:03:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 393 states have (on average 2.371501272264631) internal successors, (932), 395 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 932 transitions. [2021-10-08 16:03:38,159 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 932 transitions. Word has length 47 [2021-10-08 16:03:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:38,159 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 932 transitions. [2021-10-08 16:03:38,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 932 transitions. [2021-10-08 16:03:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 16:03:38,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:38,161 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1] [2021-10-08 16:03:38,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:38,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-08 16:03:38,376 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash 338682735, now seen corresponding path program 44 times [2021-10-08 16:03:38,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:38,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327134257] [2021-10-08 16:03:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:38,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:39,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:39,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327134257] [2021-10-08 16:03:39,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327134257] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:39,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349108158] [2021-10-08 16:03:39,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:39,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:39,237 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:39,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 16:03:39,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:39,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:03:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:39,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349108158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:39,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:39,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-08 16:03:39,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506945616] [2021-10-08 16:03:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:03:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:03:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:03:39,786 INFO L87 Difference]: Start difference. First operand 396 states and 932 transitions. Second operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:40,141 INFO L93 Difference]: Finished difference Result 766 states and 1803 transitions. [2021-10-08 16:03:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:03:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-08 16:03:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:40,145 INFO L225 Difference]: With dead ends: 766 [2021-10-08 16:03:40,145 INFO L226 Difference]: Without dead ends: 580 [2021-10-08 16:03:40,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 752.0ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:03:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-08 16:03:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 404. [2021-10-08 16:03:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 2.371571072319202) internal successors, (951), 403 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 951 transitions. [2021-10-08 16:03:40,156 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 951 transitions. Word has length 48 [2021-10-08 16:03:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:40,157 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 951 transitions. [2021-10-08 16:03:40,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 951 transitions. [2021-10-08 16:03:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-08 16:03:40,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:40,159 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1] [2021-10-08 16:03:40,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:40,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 16:03:40,374 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1909232790, now seen corresponding path program 45 times [2021-10-08 16:03:40,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:40,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761099104] [2021-10-08 16:03:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:40,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:41,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:41,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761099104] [2021-10-08 16:03:41,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761099104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:41,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672267594] [2021-10-08 16:03:41,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:41,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:41,298 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:41,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 16:03:41,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-08 16:03:41,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:41,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:03:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:41,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672267594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:41,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:41,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-08 16:03:41,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482468598] [2021-10-08 16:03:41,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-08 16:03:41,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-08 16:03:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:03:41,873 INFO L87 Difference]: Start difference. First operand 404 states and 951 transitions. Second operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:42,239 INFO L93 Difference]: Finished difference Result 782 states and 1841 transitions. [2021-10-08 16:03:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:03:42,240 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-08 16:03:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:42,241 INFO L225 Difference]: With dead ends: 782 [2021-10-08 16:03:42,241 INFO L226 Difference]: Without dead ends: 592 [2021-10-08 16:03:42,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 784.6ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:03:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-08 16:03:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 412. [2021-10-08 16:03:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.371638141809291) internal successors, (970), 411 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 970 transitions. [2021-10-08 16:03:42,252 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 970 transitions. Word has length 49 [2021-10-08 16:03:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:42,252 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 970 transitions. [2021-10-08 16:03:42,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 970 transitions. [2021-10-08 16:03:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 16:03:42,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:42,254 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2021-10-08 16:03:42,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:42,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:42,468 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash -943323057, now seen corresponding path program 46 times [2021-10-08 16:03:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:42,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086292981] [2021-10-08 16:03:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:42,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:43,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:43,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086292981] [2021-10-08 16:03:43,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086292981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:43,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260563816] [2021-10-08 16:03:43,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:43,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:43,413 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:43,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 16:03:43,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:43,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:43,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:03:43,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:43,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260563816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:43,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:43,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-10-08 16:03:43,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760397513] [2021-10-08 16:03:43,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-08 16:03:43,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-08 16:03:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:03:43,977 INFO L87 Difference]: Start difference. First operand 412 states and 970 transitions. Second operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:44,400 INFO L93 Difference]: Finished difference Result 798 states and 1879 transitions. [2021-10-08 16:03:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:03:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 16:03:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:44,404 INFO L225 Difference]: With dead ends: 798 [2021-10-08 16:03:44,404 INFO L226 Difference]: Without dead ends: 604 [2021-10-08 16:03:44,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 827.9ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:03:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-08 16:03:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 420. [2021-10-08 16:03:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 417 states have (on average 2.371702637889688) internal successors, (989), 419 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 989 transitions. [2021-10-08 16:03:44,415 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 989 transitions. Word has length 50 [2021-10-08 16:03:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:44,416 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 989 transitions. [2021-10-08 16:03:44,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 989 transitions. [2021-10-08 16:03:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:03:44,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:44,418 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1] [2021-10-08 16:03:44,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:44,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-08 16:03:44,632 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:44,633 INFO L82 PathProgramCache]: Analyzing trace with hash 821758902, now seen corresponding path program 47 times [2021-10-08 16:03:44,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:44,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217883649] [2021-10-08 16:03:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:44,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:45,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:45,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217883649] [2021-10-08 16:03:45,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217883649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:45,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137164126] [2021-10-08 16:03:45,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:45,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:45,693 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:45,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 16:03:46,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-08 16:03:46,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:46,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:03:46,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:46,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137164126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:46,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:46,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-10-08 16:03:46,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286389140] [2021-10-08 16:03:46,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-08 16:03:46,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-08 16:03:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:03:46,299 INFO L87 Difference]: Start difference. First operand 420 states and 989 transitions. Second operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:46,713 INFO L93 Difference]: Finished difference Result 814 states and 1917 transitions. [2021-10-08 16:03:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 16:03:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-08 16:03:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:46,715 INFO L225 Difference]: With dead ends: 814 [2021-10-08 16:03:46,715 INFO L226 Difference]: Without dead ends: 616 [2021-10-08 16:03:46,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 933.2ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:03:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-08 16:03:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 428. [2021-10-08 16:03:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 2.3717647058823528) internal successors, (1008), 427 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1008 transitions. [2021-10-08 16:03:46,725 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1008 transitions. Word has length 51 [2021-10-08 16:03:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:46,725 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1008 transitions. [2021-10-08 16:03:46,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1008 transitions. [2021-10-08 16:03:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:03:46,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:46,727 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1] [2021-10-08 16:03:46,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:46,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:46,940 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash -295275217, now seen corresponding path program 48 times [2021-10-08 16:03:46,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:46,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940971135] [2021-10-08 16:03:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:46,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:48,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:48,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940971135] [2021-10-08 16:03:48,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940971135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:48,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380189212] [2021-10-08 16:03:48,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:48,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:48,022 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:48,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 16:03:48,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-08 16:03:48,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:48,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:03:48,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380189212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:48,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-08 16:03:48,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111881635] [2021-10-08 16:03:48,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:03:48,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:03:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:03:48,675 INFO L87 Difference]: Start difference. First operand 428 states and 1008 transitions. Second operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:49,120 INFO L93 Difference]: Finished difference Result 830 states and 1955 transitions. [2021-10-08 16:03:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 16:03:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 16:03:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:49,123 INFO L225 Difference]: With dead ends: 830 [2021-10-08 16:03:49,123 INFO L226 Difference]: Without dead ends: 628 [2021-10-08 16:03:49,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 964.7ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:03:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-08 16:03:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 436. [2021-10-08 16:03:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 2.371824480369515) internal successors, (1027), 435 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1027 transitions. [2021-10-08 16:03:49,134 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1027 transitions. Word has length 52 [2021-10-08 16:03:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:49,134 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1027 transitions. [2021-10-08 16:03:49,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1027 transitions. [2021-10-08 16:03:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-08 16:03:49,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:49,136 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2021-10-08 16:03:49,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-08 16:03:49,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-08 16:03:49,351 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:49,352 INFO L82 PathProgramCache]: Analyzing trace with hash -563594538, now seen corresponding path program 49 times [2021-10-08 16:03:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:49,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838100512] [2021-10-08 16:03:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:49,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:50,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:50,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838100512] [2021-10-08 16:03:50,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838100512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:50,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028792026] [2021-10-08 16:03:50,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:50,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:50,506 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:50,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 16:03:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:50,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-08 16:03:50,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:51,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028792026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:51,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:51,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-08 16:03:51,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164704513] [2021-10-08 16:03:51,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-08 16:03:51,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-08 16:03:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:03:51,124 INFO L87 Difference]: Start difference. First operand 436 states and 1027 transitions. Second operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:51,577 INFO L93 Difference]: Finished difference Result 846 states and 1993 transitions. [2021-10-08 16:03:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 16:03:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-08 16:03:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:51,580 INFO L225 Difference]: With dead ends: 846 [2021-10-08 16:03:51,580 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 16:03:51,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1023.3ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:03:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 16:03:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 444. [2021-10-08 16:03:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.3718820861678003) internal successors, (1046), 443 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1046 transitions. [2021-10-08 16:03:51,589 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1046 transitions. Word has length 53 [2021-10-08 16:03:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:51,589 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1046 transitions. [2021-10-08 16:03:51,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1046 transitions. [2021-10-08 16:03:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 16:03:51,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:51,590 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2021-10-08 16:03:51,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-08 16:03:51,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:51,797 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash -291558897, now seen corresponding path program 50 times [2021-10-08 16:03:51,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:51,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124048230] [2021-10-08 16:03:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:51,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:52,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:52,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124048230] [2021-10-08 16:03:52,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124048230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:52,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96057493] [2021-10-08 16:03:52,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:52,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:52,964 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-08 16:03:53,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:53,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:03:53,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:53,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96057493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:53,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:53,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-10-08 16:03:53,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141731906] [2021-10-08 16:03:53,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-08 16:03:53,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-08 16:03:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:03:53,617 INFO L87 Difference]: Start difference. First operand 444 states and 1046 transitions. Second operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:54,098 INFO L93 Difference]: Finished difference Result 862 states and 2031 transitions. [2021-10-08 16:03:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:03:54,098 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-08 16:03:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:54,100 INFO L225 Difference]: With dead ends: 862 [2021-10-08 16:03:54,100 INFO L226 Difference]: Without dead ends: 652 [2021-10-08 16:03:54,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1044.8ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:03:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-08 16:03:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 452. [2021-10-08 16:03:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 449 states have (on average 2.3719376391982183) internal successors, (1065), 451 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1065 transitions. [2021-10-08 16:03:54,108 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1065 transitions. Word has length 54 [2021-10-08 16:03:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:54,109 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1065 transitions. [2021-10-08 16:03:54,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1065 transitions. [2021-10-08 16:03:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-08 16:03:54,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:54,110 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1] [2021-10-08 16:03:54,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-08 16:03:54,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:54,311 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -448388618, now seen corresponding path program 51 times [2021-10-08 16:03:54,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:54,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194165785] [2021-10-08 16:03:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:54,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:55,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:55,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194165785] [2021-10-08 16:03:55,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194165785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:55,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979822536] [2021-10-08 16:03:55,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:55,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:55,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:55,504 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:55,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-08 16:03:56,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-08 16:03:56,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:56,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-08 16:03:56,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:56,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979822536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:56,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:56,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-10-08 16:03:56,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130064510] [2021-10-08 16:03:56,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-08 16:03:56,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-08 16:03:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:03:56,198 INFO L87 Difference]: Start difference. First operand 452 states and 1065 transitions. Second operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:56,686 INFO L93 Difference]: Finished difference Result 878 states and 2069 transitions. [2021-10-08 16:03:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 16:03:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-08 16:03:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:56,689 INFO L225 Difference]: With dead ends: 878 [2021-10-08 16:03:56,689 INFO L226 Difference]: Without dead ends: 664 [2021-10-08 16:03:56,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1057.9ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:03:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-08 16:03:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 460. [2021-10-08 16:03:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 457 states have (on average 2.3719912472647704) internal successors, (1084), 459 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1084 transitions. [2021-10-08 16:03:56,699 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1084 transitions. Word has length 55 [2021-10-08 16:03:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:56,699 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1084 transitions. [2021-10-08 16:03:56,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1084 transitions. [2021-10-08 16:03:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-08 16:03:56,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:56,701 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1] [2021-10-08 16:03:56,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-08 16:03:56,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:56,910 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1015142673, now seen corresponding path program 52 times [2021-10-08 16:03:56,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:56,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221207235] [2021-10-08 16:03:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:56,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:58,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:58,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221207235] [2021-10-08 16:03:58,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221207235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:58,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744539724] [2021-10-08 16:03:58,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:58,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:58,174 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:58,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-08 16:03:58,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:58,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:58,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-08 16:03:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:58,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744539724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:58,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:58,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-10-08 16:03:58,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753097663] [2021-10-08 16:03:58,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:03:58,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:03:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:03:58,853 INFO L87 Difference]: Start difference. First operand 460 states and 1084 transitions. Second operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:59,373 INFO L93 Difference]: Finished difference Result 894 states and 2107 transitions. [2021-10-08 16:03:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 16:03:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-08 16:03:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:59,376 INFO L225 Difference]: With dead ends: 894 [2021-10-08 16:03:59,376 INFO L226 Difference]: Without dead ends: 676 [2021-10-08 16:03:59,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1127.5ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:03:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-10-08 16:03:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 468. [2021-10-08 16:03:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 465 states have (on average 2.372043010752688) internal successors, (1103), 467 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1103 transitions. [2021-10-08 16:03:59,385 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1103 transitions. Word has length 56 [2021-10-08 16:03:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:59,386 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1103 transitions. [2021-10-08 16:03:59,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1103 transitions. [2021-10-08 16:03:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-08 16:03:59,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:59,388 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1] [2021-10-08 16:03:59,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-08 16:03:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:59,596 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:03:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1404649194, now seen corresponding path program 53 times [2021-10-08 16:03:59,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:59,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252868784] [2021-10-08 16:03:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:59,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:00,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:00,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252868784] [2021-10-08 16:04:00,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252868784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:00,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641546332] [2021-10-08 16:04:00,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:04:00,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:00,857 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:00,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-08 16:04:01,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-08 16:04:01,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:01,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:04:01,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:01,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641546332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:01,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:01,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-10-08 16:04:01,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687753396] [2021-10-08 16:04:01,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-08 16:04:01,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-08 16:04:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:04:01,579 INFO L87 Difference]: Start difference. First operand 468 states and 1103 transitions. Second operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:02,159 INFO L93 Difference]: Finished difference Result 910 states and 2145 transitions. [2021-10-08 16:04:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 16:04:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-08 16:04:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:02,163 INFO L225 Difference]: With dead ends: 910 [2021-10-08 16:04:02,163 INFO L226 Difference]: Without dead ends: 688 [2021-10-08 16:04:02,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1132.0ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:04:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-10-08 16:04:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 476. [2021-10-08 16:04:02,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 473 states have (on average 2.372093023255814) internal successors, (1122), 475 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1122 transitions. [2021-10-08 16:04:02,175 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1122 transitions. Word has length 57 [2021-10-08 16:04:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:02,176 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1122 transitions. [2021-10-08 16:04:02,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1122 transitions. [2021-10-08 16:04:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-08 16:04:02,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:02,178 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1] [2021-10-08 16:04:02,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-08 16:04:02,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-08 16:04:02,394 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash -594449457, now seen corresponding path program 54 times [2021-10-08 16:04:02,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:02,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615663816] [2021-10-08 16:04:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:02,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:03,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:03,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615663816] [2021-10-08 16:04:03,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615663816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:03,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281334543] [2021-10-08 16:04:03,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:04:03,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:03,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:03,765 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:03,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-08 16:04:04,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-08 16:04:04,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:04,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-08 16:04:04,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:04,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281334543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:04,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:04,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-10-08 16:04:04,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031458317] [2021-10-08 16:04:04,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-08 16:04:04,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:04,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-08 16:04:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:04:04,555 INFO L87 Difference]: Start difference. First operand 476 states and 1122 transitions. Second operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:05,160 INFO L93 Difference]: Finished difference Result 926 states and 2183 transitions. [2021-10-08 16:04:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 16:04:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-08 16:04:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:05,162 INFO L225 Difference]: With dead ends: 926 [2021-10-08 16:04:05,162 INFO L226 Difference]: Without dead ends: 700 [2021-10-08 16:04:05,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1244.0ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:04:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-08 16:04:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 484. [2021-10-08 16:04:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 2.372141372141372) internal successors, (1141), 483 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1141 transitions. [2021-10-08 16:04:05,172 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1141 transitions. Word has length 58 [2021-10-08 16:04:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:05,172 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1141 transitions. [2021-10-08 16:04:05,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1141 transitions. [2021-10-08 16:04:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-08 16:04:05,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:05,174 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1] [2021-10-08 16:04:05,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-08 16:04:05,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:05,375 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:05,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1248061386, now seen corresponding path program 55 times [2021-10-08 16:04:05,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:05,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659465203] [2021-10-08 16:04:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:05,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:06,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:06,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659465203] [2021-10-08 16:04:06,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659465203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:06,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149188208] [2021-10-08 16:04:06,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:04:06,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:06,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:06,778 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:06,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-08 16:04:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:07,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-08 16:04:07,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149188208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:07,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-10-08 16:04:07,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844193336] [2021-10-08 16:04:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-08 16:04:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-08 16:04:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:04:07,553 INFO L87 Difference]: Start difference. First operand 484 states and 1141 transitions. Second operand has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:08,101 INFO L93 Difference]: Finished difference Result 942 states and 2221 transitions. [2021-10-08 16:04:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 16:04:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-08 16:04:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:08,103 INFO L225 Difference]: With dead ends: 942 [2021-10-08 16:04:08,103 INFO L226 Difference]: Without dead ends: 712 [2021-10-08 16:04:08,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1261.9ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:04:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-08 16:04:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 492. [2021-10-08 16:04:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 2.372188139059305) internal successors, (1160), 491 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1160 transitions. [2021-10-08 16:04:08,112 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1160 transitions. Word has length 59 [2021-10-08 16:04:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:08,112 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1160 transitions. [2021-10-08 16:04:08,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1160 transitions. [2021-10-08 16:04:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-08 16:04:08,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:08,114 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1] [2021-10-08 16:04:08,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-08 16:04:08,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-08 16:04:08,315 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash -35194705, now seen corresponding path program 56 times [2021-10-08 16:04:08,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:08,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599761630] [2021-10-08 16:04:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:08,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:09,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:09,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599761630] [2021-10-08 16:04:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599761630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:09,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795953705] [2021-10-08 16:04:09,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:09,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:09,772 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:09,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-08 16:04:10,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:10,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:10,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-08 16:04:10,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:10,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795953705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:10,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:10,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-10-08 16:04:10,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743168894] [2021-10-08 16:04:10,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-08 16:04:10,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-08 16:04:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:04:10,588 INFO L87 Difference]: Start difference. First operand 492 states and 1160 transitions. Second operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:11,202 INFO L93 Difference]: Finished difference Result 958 states and 2259 transitions. [2021-10-08 16:04:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 16:04:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-08 16:04:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:11,205 INFO L225 Difference]: With dead ends: 958 [2021-10-08 16:04:11,205 INFO L226 Difference]: Without dead ends: 724 [2021-10-08 16:04:11,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1314.0ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:04:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-08 16:04:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 500. [2021-10-08 16:04:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.3722334004024144) internal successors, (1179), 499 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1179 transitions. [2021-10-08 16:04:11,214 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1179 transitions. Word has length 60 [2021-10-08 16:04:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:11,214 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1179 transitions. [2021-10-08 16:04:11,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1179 transitions. [2021-10-08 16:04:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-08 16:04:11,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:11,216 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1] [2021-10-08 16:04:11,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-08 16:04:11,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-08 16:04:11,417 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1091033258, now seen corresponding path program 57 times [2021-10-08 16:04:11,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:11,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983978313] [2021-10-08 16:04:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:11,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:12,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:12,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983978313] [2021-10-08 16:04:12,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983978313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:12,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758001574] [2021-10-08 16:04:12,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:12,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:12,926 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:12,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-08 16:04:13,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-08 16:04:13,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:13,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-08 16:04:13,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:13,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758001574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:13,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:13,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-10-08 16:04:13,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242619404] [2021-10-08 16:04:13,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-08 16:04:13,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-08 16:04:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:04:13,758 INFO L87 Difference]: Start difference. First operand 500 states and 1179 transitions. Second operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:14,442 INFO L93 Difference]: Finished difference Result 974 states and 2297 transitions. [2021-10-08 16:04:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 16:04:14,442 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-08 16:04:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:14,444 INFO L225 Difference]: With dead ends: 974 [2021-10-08 16:04:14,444 INFO L226 Difference]: Without dead ends: 736 [2021-10-08 16:04:14,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1374.8ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:04:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-08 16:04:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 508. [2021-10-08 16:04:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 2.372277227722772) internal successors, (1198), 507 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1198 transitions. [2021-10-08 16:04:14,453 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1198 transitions. Word has length 61 [2021-10-08 16:04:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:14,453 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1198 transitions. [2021-10-08 16:04:14,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1198 transitions. [2021-10-08 16:04:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-08 16:04:14,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:14,455 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1] [2021-10-08 16:04:14,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:14,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-08 16:04:14,655 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:14,656 INFO L82 PathProgramCache]: Analyzing trace with hash 537709967, now seen corresponding path program 58 times [2021-10-08 16:04:14,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:14,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581895541] [2021-10-08 16:04:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:14,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:16,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:16,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581895541] [2021-10-08 16:04:16,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581895541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:16,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205194931] [2021-10-08 16:04:16,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:04:16,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:16,175 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-08 16:04:16,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:04:16,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-08 16:04:16,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:16,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205194931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:16,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:16,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-10-08 16:04:16,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505198251] [2021-10-08 16:04:16,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-08 16:04:16,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-08 16:04:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:04:16,997 INFO L87 Difference]: Start difference. First operand 508 states and 1198 transitions. Second operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:17,858 INFO L93 Difference]: Finished difference Result 990 states and 2335 transitions. [2021-10-08 16:04:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-08 16:04:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-08 16:04:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:17,862 INFO L225 Difference]: With dead ends: 990 [2021-10-08 16:04:17,862 INFO L226 Difference]: Without dead ends: 748 [2021-10-08 16:04:17,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1386.9ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:04:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-08 16:04:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 516. [2021-10-08 16:04:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 2.3723196881091617) internal successors, (1217), 515 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1217 transitions. [2021-10-08 16:04:17,875 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1217 transitions. Word has length 62 [2021-10-08 16:04:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:17,875 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1217 transitions. [2021-10-08 16:04:17,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1217 transitions. [2021-10-08 16:04:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-08 16:04:17,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:17,878 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1] [2021-10-08 16:04:17,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:18,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:18,094 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -510857610, now seen corresponding path program 59 times [2021-10-08 16:04:18,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:18,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942637129] [2021-10-08 16:04:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:18,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:19,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:19,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942637129] [2021-10-08 16:04:19,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942637129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:19,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073216486] [2021-10-08 16:04:19,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:04:19,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:19,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:19,686 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:19,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-08 16:04:20,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-08 16:04:20,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:20,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-08 16:04:20,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:20,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073216486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:20,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:20,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-10-08 16:04:20,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296964050] [2021-10-08 16:04:20,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-08 16:04:20,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-08 16:04:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:04:20,585 INFO L87 Difference]: Start difference. First operand 516 states and 1217 transitions. Second operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:21,314 INFO L93 Difference]: Finished difference Result 1006 states and 2373 transitions. [2021-10-08 16:04:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 16:04:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-08 16:04:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:21,317 INFO L225 Difference]: With dead ends: 1006 [2021-10-08 16:04:21,317 INFO L226 Difference]: Without dead ends: 760 [2021-10-08 16:04:21,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1437.8ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:04:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-08 16:04:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 524. [2021-10-08 16:04:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 521 states have (on average 2.3723608445297506) internal successors, (1236), 523 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1236 transitions. [2021-10-08 16:04:21,330 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1236 transitions. Word has length 63 [2021-10-08 16:04:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:21,331 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1236 transitions. [2021-10-08 16:04:21,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1236 transitions. [2021-10-08 16:04:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-08 16:04:21,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:21,333 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1] [2021-10-08 16:04:21,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:21,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-08 16:04:21,547 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1343285871, now seen corresponding path program 60 times [2021-10-08 16:04:21,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:21,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533076317] [2021-10-08 16:04:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:21,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:23,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:23,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533076317] [2021-10-08 16:04:23,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533076317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:23,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749942731] [2021-10-08 16:04:23,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:04:23,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:23,235 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:23,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-08 16:04:23,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-08 16:04:23,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:23,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:04:23,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:24,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749942731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:24,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:24,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-10-08 16:04:24,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147256417] [2021-10-08 16:04:24,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-08 16:04:24,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:24,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-08 16:04:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:04:24,148 INFO L87 Difference]: Start difference. First operand 524 states and 1236 transitions. Second operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:24,956 INFO L93 Difference]: Finished difference Result 1022 states and 2411 transitions. [2021-10-08 16:04:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 16:04:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-08 16:04:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:24,959 INFO L225 Difference]: With dead ends: 1022 [2021-10-08 16:04:24,959 INFO L226 Difference]: Without dead ends: 772 [2021-10-08 16:04:24,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1512.9ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:04:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-08 16:04:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 532. [2021-10-08 16:04:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 529 states have (on average 2.372400756143667) internal successors, (1255), 531 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1255 transitions. [2021-10-08 16:04:24,975 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1255 transitions. Word has length 64 [2021-10-08 16:04:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:24,975 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1255 transitions. [2021-10-08 16:04:24,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1255 transitions. [2021-10-08 16:04:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-08 16:04:24,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:24,977 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1] [2021-10-08 16:04:25,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-08 16:04:25,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:25,193 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1307808362, now seen corresponding path program 61 times [2021-10-08 16:04:25,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:25,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025523074] [2021-10-08 16:04:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:25,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:26,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:26,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025523074] [2021-10-08 16:04:26,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025523074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:26,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525221178] [2021-10-08 16:04:26,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:04:26,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:26,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:26,914 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:26,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-08 16:04:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:27,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-08 16:04:27,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:27,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525221178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:27,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:27,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-10-08 16:04:27,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24342225] [2021-10-08 16:04:27,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-08 16:04:27,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-08 16:04:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:04:27,789 INFO L87 Difference]: Start difference. First operand 532 states and 1255 transitions. Second operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:28,741 INFO L93 Difference]: Finished difference Result 1038 states and 2449 transitions. [2021-10-08 16:04:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 16:04:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-08 16:04:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:28,744 INFO L225 Difference]: With dead ends: 1038 [2021-10-08 16:04:28,744 INFO L226 Difference]: Without dead ends: 784 [2021-10-08 16:04:28,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1554.5ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:04:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-08 16:04:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 540. [2021-10-08 16:04:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 537 states have (on average 2.37243947858473) internal successors, (1274), 539 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1274 transitions. [2021-10-08 16:04:28,754 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1274 transitions. Word has length 65 [2021-10-08 16:04:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:28,754 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 1274 transitions. [2021-10-08 16:04:28,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1274 transitions. [2021-10-08 16:04:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-08 16:04:28,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:28,756 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1] [2021-10-08 16:04:28,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-08 16:04:28,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:28,971 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1887350961, now seen corresponding path program 62 times [2021-10-08 16:04:28,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:28,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322986746] [2021-10-08 16:04:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:28,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:30,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:30,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322986746] [2021-10-08 16:04:30,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322986746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:30,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738037155] [2021-10-08 16:04:30,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:30,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:30,716 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:30,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-08 16:04:31,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:31,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:31,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-08 16:04:31,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738037155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:31,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:31,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-10-08 16:04:31,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6079778] [2021-10-08 16:04:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-08 16:04:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-08 16:04:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:04:31,621 INFO L87 Difference]: Start difference. First operand 540 states and 1274 transitions. Second operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:32,438 INFO L93 Difference]: Finished difference Result 1054 states and 2487 transitions. [2021-10-08 16:04:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 16:04:32,439 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-08 16:04:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:32,441 INFO L225 Difference]: With dead ends: 1054 [2021-10-08 16:04:32,442 INFO L226 Difference]: Without dead ends: 796 [2021-10-08 16:04:32,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1602.6ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:04:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-08 16:04:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 548. [2021-10-08 16:04:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 545 states have (on average 2.3724770642201833) internal successors, (1293), 547 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1293 transitions. [2021-10-08 16:04:32,456 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1293 transitions. Word has length 66 [2021-10-08 16:04:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:32,456 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1293 transitions. [2021-10-08 16:04:32,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1293 transitions. [2021-10-08 16:04:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-08 16:04:32,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:32,458 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1] [2021-10-08 16:04:32,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:32,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-08 16:04:32,673 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1621664950, now seen corresponding path program 63 times [2021-10-08 16:04:32,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:32,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629068929] [2021-10-08 16:04:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:32,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:34,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:34,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629068929] [2021-10-08 16:04:34,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629068929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:34,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302554013] [2021-10-08 16:04:34,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:34,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:34,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:34,479 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-08 16:04:35,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-08 16:04:35,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:35,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-08 16:04:35,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:35,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302554013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:35,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:35,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-10-08 16:04:35,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151708095] [2021-10-08 16:04:35,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-08 16:04:35,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-08 16:04:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:04:35,423 INFO L87 Difference]: Start difference. First operand 548 states and 1293 transitions. Second operand has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:36,306 INFO L93 Difference]: Finished difference Result 1070 states and 2525 transitions. [2021-10-08 16:04:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 16:04:36,307 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-08 16:04:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:36,312 INFO L225 Difference]: With dead ends: 1070 [2021-10-08 16:04:36,312 INFO L226 Difference]: Without dead ends: 808 [2021-10-08 16:04:36,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1648.2ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:04:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-10-08 16:04:36,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 556. [2021-10-08 16:04:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 553 states have (on average 2.37251356238698) internal successors, (1312), 555 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1312 transitions. [2021-10-08 16:04:36,327 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1312 transitions. Word has length 67 [2021-10-08 16:04:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:36,327 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1312 transitions. [2021-10-08 16:04:36,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1312 transitions. [2021-10-08 16:04:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-08 16:04:36,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:36,330 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1] [2021-10-08 16:04:36,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:36,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:36,544 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1267991505, now seen corresponding path program 64 times [2021-10-08 16:04:36,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:36,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85399371] [2021-10-08 16:04:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:36,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:38,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:38,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85399371] [2021-10-08 16:04:38,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85399371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:38,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957525173] [2021-10-08 16:04:38,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:04:38,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:38,413 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:38,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-08 16:04:39,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:04:39,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:39,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-08 16:04:39,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:39,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957525173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:39,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:39,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-10-08 16:04:39,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753508830] [2021-10-08 16:04:39,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-08 16:04:39,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-08 16:04:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:04:39,351 INFO L87 Difference]: Start difference. First operand 556 states and 1312 transitions. Second operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:40,216 INFO L93 Difference]: Finished difference Result 1086 states and 2563 transitions. [2021-10-08 16:04:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 16:04:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-08 16:04:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:40,219 INFO L225 Difference]: With dead ends: 1086 [2021-10-08 16:04:40,219 INFO L226 Difference]: Without dead ends: 820 [2021-10-08 16:04:40,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1713.5ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:04:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-10-08 16:04:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 564. [2021-10-08 16:04:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 561 states have (on average 2.372549019607843) internal successors, (1331), 563 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1331 transitions. [2021-10-08 16:04:40,250 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1331 transitions. Word has length 68 [2021-10-08 16:04:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:40,251 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1331 transitions. [2021-10-08 16:04:40,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1331 transitions. [2021-10-08 16:04:40,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-08 16:04:40,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:40,253 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1] [2021-10-08 16:04:40,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:40,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-10-08 16:04:40,466 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:40,467 INFO L82 PathProgramCache]: Analyzing trace with hash -653028394, now seen corresponding path program 65 times [2021-10-08 16:04:40,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:40,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234794719] [2021-10-08 16:04:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:40,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:42,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:42,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234794719] [2021-10-08 16:04:42,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234794719] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:42,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836199740] [2021-10-08 16:04:42,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:04:42,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:42,455 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:42,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-08 16:04:43,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-08 16:04:43,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:43,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-08 16:04:43,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:43,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836199740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:43,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:43,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-10-08 16:04:43,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796601591] [2021-10-08 16:04:43,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-08 16:04:43,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-08 16:04:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:04:43,428 INFO L87 Difference]: Start difference. First operand 564 states and 1331 transitions. Second operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:44,377 INFO L93 Difference]: Finished difference Result 1102 states and 2601 transitions. [2021-10-08 16:04:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 16:04:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-08 16:04:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:44,380 INFO L225 Difference]: With dead ends: 1102 [2021-10-08 16:04:44,380 INFO L226 Difference]: Without dead ends: 832 [2021-10-08 16:04:44,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1824.5ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:04:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-08 16:04:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 572. [2021-10-08 16:04:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 569 states have (on average 2.3725834797891037) internal successors, (1350), 571 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1350 transitions. [2021-10-08 16:04:44,396 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1350 transitions. Word has length 69 [2021-10-08 16:04:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:44,396 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1350 transitions. [2021-10-08 16:04:44,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1350 transitions. [2021-10-08 16:04:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-08 16:04:44,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:44,398 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1] [2021-10-08 16:04:44,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:44,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:44,613 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:44,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:44,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1230958863, now seen corresponding path program 66 times [2021-10-08 16:04:44,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:44,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160109573] [2021-10-08 16:04:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:44,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:46,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:46,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160109573] [2021-10-08 16:04:46,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160109573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:46,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657931396] [2021-10-08 16:04:46,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:04:46,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:46,601 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:46,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-08 16:04:47,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-08 16:04:47,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:47,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-08 16:04:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:47,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657931396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:47,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:47,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-10-08 16:04:47,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013874949] [2021-10-08 16:04:47,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-08 16:04:47,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-08 16:04:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:04:47,631 INFO L87 Difference]: Start difference. First operand 572 states and 1350 transitions. Second operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:48,666 INFO L93 Difference]: Finished difference Result 1118 states and 2639 transitions. [2021-10-08 16:04:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-08 16:04:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-08 16:04:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:48,668 INFO L225 Difference]: With dead ends: 1118 [2021-10-08 16:04:48,668 INFO L226 Difference]: Without dead ends: 844 [2021-10-08 16:04:48,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1840.1ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:04:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-08 16:04:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 580. [2021-10-08 16:04:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 577 states have (on average 2.3726169844020797) internal successors, (1369), 579 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1369 transitions. [2021-10-08 16:04:48,678 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1369 transitions. Word has length 70 [2021-10-08 16:04:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:48,679 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1369 transitions. [2021-10-08 16:04:48,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1369 transitions. [2021-10-08 16:04:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-08 16:04:48,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:48,680 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1] [2021-10-08 16:04:48,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-08 16:04:48,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-08 16:04:48,881 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash -494978314, now seen corresponding path program 67 times [2021-10-08 16:04:48,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:48,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020331852] [2021-10-08 16:04:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:48,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:50,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:50,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020331852] [2021-10-08 16:04:50,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020331852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:50,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524845616] [2021-10-08 16:04:50,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:04:50,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:50,907 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:50,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-08 16:04:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:51,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-08 16:04:51,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:51,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524845616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:51,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:51,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2021-10-08 16:04:51,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585094377] [2021-10-08 16:04:51,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-08 16:04:51,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-08 16:04:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:04:51,921 INFO L87 Difference]: Start difference. First operand 580 states and 1369 transitions. Second operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:52,933 INFO L93 Difference]: Finished difference Result 1134 states and 2677 transitions. [2021-10-08 16:04:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-08 16:04:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-08 16:04:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:52,935 INFO L225 Difference]: With dead ends: 1134 [2021-10-08 16:04:52,935 INFO L226 Difference]: Without dead ends: 856 [2021-10-08 16:04:52,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1865.7ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:04:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-10-08 16:04:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 588. [2021-10-08 16:04:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 585 states have (on average 2.3726495726495727) internal successors, (1388), 587 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1388 transitions. [2021-10-08 16:04:52,947 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1388 transitions. Word has length 71 [2021-10-08 16:04:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:52,947 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1388 transitions. [2021-10-08 16:04:52,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1388 transitions. [2021-10-08 16:04:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-08 16:04:52,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:52,949 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1] [2021-10-08 16:04:52,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:53,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-08 16:04:53,156 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1835544047, now seen corresponding path program 68 times [2021-10-08 16:04:53,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:53,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890365559] [2021-10-08 16:04:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:53,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:55,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:55,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890365559] [2021-10-08 16:04:55,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890365559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:55,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337457191] [2021-10-08 16:04:55,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:55,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:55,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:55,259 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:55,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-08 16:04:56,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:56,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:56,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-08 16:04:56,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:56,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337457191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:56,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:56,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2021-10-08 16:04:56,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686190563] [2021-10-08 16:04:56,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-08 16:04:56,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:56,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-08 16:04:56,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:04:56,292 INFO L87 Difference]: Start difference. First operand 588 states and 1388 transitions. Second operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:57,361 INFO L93 Difference]: Finished difference Result 1150 states and 2715 transitions. [2021-10-08 16:04:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-08 16:04:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-08 16:04:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:57,363 INFO L225 Difference]: With dead ends: 1150 [2021-10-08 16:04:57,363 INFO L226 Difference]: Without dead ends: 868 [2021-10-08 16:04:57,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1949.9ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:04:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-08 16:04:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 596. [2021-10-08 16:04:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 593 states have (on average 2.372681281618887) internal successors, (1407), 595 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1407 transitions. [2021-10-08 16:04:57,375 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1407 transitions. Word has length 72 [2021-10-08 16:04:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:57,375 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1407 transitions. [2021-10-08 16:04:57,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1407 transitions. [2021-10-08 16:04:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-08 16:04:57,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:57,377 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1] [2021-10-08 16:04:57,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-08 16:04:57,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-08 16:04:57,578 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:04:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:57,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1067293206, now seen corresponding path program 69 times [2021-10-08 16:04:57,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:57,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104811886] [2021-10-08 16:04:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:57,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:59,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:59,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104811886] [2021-10-08 16:04:59,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104811886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:59,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477074857] [2021-10-08 16:04:59,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:59,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:59,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:59,748 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-08 16:05:00,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-08 16:05:00,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:00,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-08 16:05:00,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:00,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477074857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:00,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:00,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2021-10-08 16:05:00,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259409743] [2021-10-08 16:05:00,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-08 16:05:00,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-08 16:05:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:05:00,816 INFO L87 Difference]: Start difference. First operand 596 states and 1407 transitions. Second operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:01,851 INFO L93 Difference]: Finished difference Result 1166 states and 2753 transitions. [2021-10-08 16:05:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-08 16:05:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-08 16:05:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:01,853 INFO L225 Difference]: With dead ends: 1166 [2021-10-08 16:05:01,853 INFO L226 Difference]: Without dead ends: 880 [2021-10-08 16:05:01,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2021.3ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:05:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-08 16:05:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 604. [2021-10-08 16:05:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 2.372712146422629) internal successors, (1426), 603 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1426 transitions. [2021-10-08 16:05:01,866 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1426 transitions. Word has length 73 [2021-10-08 16:05:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:01,866 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1426 transitions. [2021-10-08 16:05:01,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1426 transitions. [2021-10-08 16:05:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-08 16:05:01,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:01,868 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1] [2021-10-08 16:05:01,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-08 16:05:02,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:02,084 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1273646385, now seen corresponding path program 70 times [2021-10-08 16:05:02,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:02,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189375008] [2021-10-08 16:05:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:02,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:04,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:04,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189375008] [2021-10-08 16:05:04,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189375008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:04,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337566119] [2021-10-08 16:05:04,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:05:04,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:04,321 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:04,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-08 16:05:05,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:05:05,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:05,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-08 16:05:05,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:05,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337566119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:05,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:05,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2021-10-08 16:05:05,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503848240] [2021-10-08 16:05:05,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-08 16:05:05,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-08 16:05:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:05:05,420 INFO L87 Difference]: Start difference. First operand 604 states and 1426 transitions. Second operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:06,629 INFO L93 Difference]: Finished difference Result 1182 states and 2791 transitions. [2021-10-08 16:05:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-08 16:05:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-10-08 16:05:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:06,631 INFO L225 Difference]: With dead ends: 1182 [2021-10-08 16:05:06,631 INFO L226 Difference]: Without dead ends: 892 [2021-10-08 16:05:06,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2080.0ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:05:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-10-08 16:05:06,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 612. [2021-10-08 16:05:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 2.3727422003284073) internal successors, (1445), 611 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1445 transitions. [2021-10-08 16:05:06,654 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1445 transitions. Word has length 74 [2021-10-08 16:05:06,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:06,654 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1445 transitions. [2021-10-08 16:05:06,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:06,655 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1445 transitions. [2021-10-08 16:05:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-08 16:05:06,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:06,657 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1] [2021-10-08 16:05:06,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-08 16:05:06,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:06,871 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:06,871 INFO L82 PathProgramCache]: Analyzing trace with hash -828329674, now seen corresponding path program 71 times [2021-10-08 16:05:06,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:06,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199376764] [2021-10-08 16:05:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:06,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:09,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:09,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199376764] [2021-10-08 16:05:09,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199376764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:09,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486155650] [2021-10-08 16:05:09,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:05:09,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:09,231 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:09,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-08 16:05:10,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-08 16:05:10,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:10,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-08 16:05:10,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:10,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486155650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:10,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:10,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2021-10-08 16:05:10,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360741049] [2021-10-08 16:05:10,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-08 16:05:10,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-08 16:05:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:05:10,428 INFO L87 Difference]: Start difference. First operand 612 states and 1445 transitions. Second operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:11,593 INFO L93 Difference]: Finished difference Result 1198 states and 2829 transitions. [2021-10-08 16:05:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:05:11,593 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-08 16:05:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:11,595 INFO L225 Difference]: With dead ends: 1198 [2021-10-08 16:05:11,595 INFO L226 Difference]: Without dead ends: 904 [2021-10-08 16:05:11,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2185.8ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:05:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-10-08 16:05:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 620. [2021-10-08 16:05:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 617 states have (on average 2.372771474878444) internal successors, (1464), 619 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1464 transitions. [2021-10-08 16:05:11,605 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1464 transitions. Word has length 75 [2021-10-08 16:05:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:11,605 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1464 transitions. [2021-10-08 16:05:11,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1464 transitions. [2021-10-08 16:05:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-08 16:05:11,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:11,606 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1] [2021-10-08 16:05:11,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-08 16:05:11,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:11,807 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:11,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash 91586479, now seen corresponding path program 72 times [2021-10-08 16:05:11,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:11,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765546334] [2021-10-08 16:05:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:11,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:14,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:14,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765546334] [2021-10-08 16:05:14,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765546334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:14,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804900472] [2021-10-08 16:05:14,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:05:14,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:14,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:14,262 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:14,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-08 16:05:15,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-08 16:05:15,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:15,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-08 16:05:15,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:15,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804900472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:15,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:15,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2021-10-08 16:05:15,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266107108] [2021-10-08 16:05:15,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-08 16:05:15,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-08 16:05:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:05:15,483 INFO L87 Difference]: Start difference. First operand 620 states and 1464 transitions. Second operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:16,753 INFO L93 Difference]: Finished difference Result 1214 states and 2867 transitions. [2021-10-08 16:05:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-08 16:05:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-08 16:05:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:16,755 INFO L225 Difference]: With dead ends: 1214 [2021-10-08 16:05:16,755 INFO L226 Difference]: Without dead ends: 916 [2021-10-08 16:05:16,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2291.1ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:05:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-10-08 16:05:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 628. [2021-10-08 16:05:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 2.3728) internal successors, (1483), 627 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1483 transitions. [2021-10-08 16:05:16,765 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1483 transitions. Word has length 76 [2021-10-08 16:05:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:16,765 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1483 transitions. [2021-10-08 16:05:16,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1483 transitions. [2021-10-08 16:05:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-08 16:05:16,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:16,766 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1] [2021-10-08 16:05:16,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:16,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:16,967 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1455783850, now seen corresponding path program 73 times [2021-10-08 16:05:16,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:16,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145081721] [2021-10-08 16:05:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:16,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:19,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:19,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145081721] [2021-10-08 16:05:19,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145081721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:19,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582789900] [2021-10-08 16:05:19,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:05:19,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:19,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:19,355 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:19,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-08 16:05:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:20,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-08 16:05:20,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:20,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582789900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:20,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:20,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2021-10-08 16:05:20,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840230973] [2021-10-08 16:05:20,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-08 16:05:20,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-08 16:05:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:05:20,571 INFO L87 Difference]: Start difference. First operand 628 states and 1483 transitions. Second operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:21,841 INFO L93 Difference]: Finished difference Result 1230 states and 2905 transitions. [2021-10-08 16:05:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 16:05:21,841 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-08 16:05:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:21,843 INFO L225 Difference]: With dead ends: 1230 [2021-10-08 16:05:21,843 INFO L226 Difference]: Without dead ends: 928 [2021-10-08 16:05:21,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2200.4ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:05:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-10-08 16:05:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 636. [2021-10-08 16:05:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.372827804107425) internal successors, (1502), 635 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1502 transitions. [2021-10-08 16:05:21,853 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1502 transitions. Word has length 77 [2021-10-08 16:05:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:21,854 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1502 transitions. [2021-10-08 16:05:21,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1502 transitions. [2021-10-08 16:05:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-08 16:05:21,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:21,855 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1] [2021-10-08 16:05:21,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:22,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:22,056 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2115343503, now seen corresponding path program 74 times [2021-10-08 16:05:22,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:22,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188807965] [2021-10-08 16:05:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:22,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:24,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:24,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188807965] [2021-10-08 16:05:24,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188807965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:24,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199876451] [2021-10-08 16:05:24,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:24,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:24,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:24,578 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-08 16:05:25,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:05:25,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:25,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-08 16:05:25,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:25,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199876451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:25,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:25,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-10-08 16:05:25,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844281973] [2021-10-08 16:05:25,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-08 16:05:25,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-08 16:05:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:05:25,785 INFO L87 Difference]: Start difference. First operand 636 states and 1502 transitions. Second operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:27,086 INFO L93 Difference]: Finished difference Result 1246 states and 2943 transitions. [2021-10-08 16:05:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-08 16:05:27,087 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-08 16:05:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:27,088 INFO L225 Difference]: With dead ends: 1246 [2021-10-08 16:05:27,088 INFO L226 Difference]: Without dead ends: 940 [2021-10-08 16:05:27,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2335.5ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:05:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-08 16:05:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 644. [2021-10-08 16:05:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 641 states have (on average 2.372854914196568) internal successors, (1521), 643 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1521 transitions. [2021-10-08 16:05:27,100 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1521 transitions. Word has length 78 [2021-10-08 16:05:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:27,100 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1521 transitions. [2021-10-08 16:05:27,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1521 transitions. [2021-10-08 16:05:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-08 16:05:27,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:27,102 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1] [2021-10-08 16:05:27,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-08 16:05:27,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:27,303 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:27,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1151141750, now seen corresponding path program 75 times [2021-10-08 16:05:27,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:27,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778245794] [2021-10-08 16:05:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:27,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:29,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:29,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778245794] [2021-10-08 16:05:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778245794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:29,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632128816] [2021-10-08 16:05:29,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:05:29,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:29,830 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:29,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-08 16:05:30,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-08 16:05:30,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:30,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-08 16:05:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:31,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632128816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:31,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:31,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-10-08 16:05:31,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631719905] [2021-10-08 16:05:31,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-08 16:05:31,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-08 16:05:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:05:31,123 INFO L87 Difference]: Start difference. First operand 644 states and 1521 transitions. Second operand has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:32,616 INFO L93 Difference]: Finished difference Result 1262 states and 2981 transitions. [2021-10-08 16:05:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-08 16:05:32,616 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-08 16:05:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:32,618 INFO L225 Difference]: With dead ends: 1262 [2021-10-08 16:05:32,618 INFO L226 Difference]: Without dead ends: 952 [2021-10-08 16:05:32,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2335.0ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:05:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-10-08 16:05:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 652. [2021-10-08 16:05:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.3728813559322033) internal successors, (1540), 651 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1540 transitions. [2021-10-08 16:05:32,630 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1540 transitions. Word has length 79 [2021-10-08 16:05:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:32,631 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1540 transitions. [2021-10-08 16:05:32,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1540 transitions. [2021-10-08 16:05:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-08 16:05:32,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:32,632 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1] [2021-10-08 16:05:32,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-10-08 16:05:32,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:32,833 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:32,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1325658479, now seen corresponding path program 76 times [2021-10-08 16:05:32,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:32,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793576774] [2021-10-08 16:05:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:32,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:35,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:35,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793576774] [2021-10-08 16:05:35,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793576774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:35,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58827897] [2021-10-08 16:05:35,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:05:35,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:35,428 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:35,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-08 16:05:36,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:05:36,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:36,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-08 16:05:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:36,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58827897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:36,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:36,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2021-10-08 16:05:36,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090136928] [2021-10-08 16:05:36,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-08 16:05:36,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-08 16:05:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:05:36,714 INFO L87 Difference]: Start difference. First operand 652 states and 1540 transitions. Second operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:38,069 INFO L93 Difference]: Finished difference Result 1278 states and 3019 transitions. [2021-10-08 16:05:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 16:05:38,069 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-08 16:05:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:38,071 INFO L225 Difference]: With dead ends: 1278 [2021-10-08 16:05:38,071 INFO L226 Difference]: Without dead ends: 964 [2021-10-08 16:05:38,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2417.5ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:05:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-08 16:05:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 660. [2021-10-08 16:05:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.3729071537290714) internal successors, (1559), 659 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1559 transitions. [2021-10-08 16:05:38,082 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1559 transitions. Word has length 80 [2021-10-08 16:05:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:38,082 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1559 transitions. [2021-10-08 16:05:38,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1559 transitions. [2021-10-08 16:05:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-08 16:05:38,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:38,083 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1] [2021-10-08 16:05:38,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-08 16:05:38,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-08 16:05:38,285 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1854257514, now seen corresponding path program 77 times [2021-10-08 16:05:38,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:38,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402715979] [2021-10-08 16:05:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:38,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:41,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:41,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402715979] [2021-10-08 16:05:41,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402715979] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:41,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410261244] [2021-10-08 16:05:41,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:05:41,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:41,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:41,034 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:41,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-08 16:05:42,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-08 16:05:42,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:42,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-08 16:05:42,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:42,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410261244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:42,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:42,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-10-08 16:05:42,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788417782] [2021-10-08 16:05:42,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-08 16:05:42,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-08 16:05:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:05:42,362 INFO L87 Difference]: Start difference. First operand 660 states and 1559 transitions. Second operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:43,854 INFO L93 Difference]: Finished difference Result 1294 states and 3057 transitions. [2021-10-08 16:05:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-08 16:05:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-08 16:05:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:43,856 INFO L225 Difference]: With dead ends: 1294 [2021-10-08 16:05:43,857 INFO L226 Difference]: Without dead ends: 976 [2021-10-08 16:05:43,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2581.2ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:05:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-10-08 16:05:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 668. [2021-10-08 16:05:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 665 states have (on average 2.3729323308270676) internal successors, (1578), 667 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1578 transitions. [2021-10-08 16:05:43,867 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1578 transitions. Word has length 81 [2021-10-08 16:05:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:43,867 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1578 transitions. [2021-10-08 16:05:43,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1578 transitions. [2021-10-08 16:05:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-08 16:05:43,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:43,868 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1] [2021-10-08 16:05:43,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-08 16:05:44,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:44,069 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1647405489, now seen corresponding path program 78 times [2021-10-08 16:05:44,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:44,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118475142] [2021-10-08 16:05:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:44,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:46,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:46,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118475142] [2021-10-08 16:05:46,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118475142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:46,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047588305] [2021-10-08 16:05:46,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:05:46,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:46,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:46,804 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:46,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-08 16:05:47,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-08 16:05:47,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:47,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-08 16:05:47,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:48,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047588305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:48,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:48,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2021-10-08 16:05:48,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663620075] [2021-10-08 16:05:48,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-08 16:05:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-08 16:05:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:05:48,175 INFO L87 Difference]: Start difference. First operand 668 states and 1578 transitions. Second operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:49,809 INFO L93 Difference]: Finished difference Result 1310 states and 3095 transitions. [2021-10-08 16:05:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-08 16:05:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-08 16:05:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:49,812 INFO L225 Difference]: With dead ends: 1310 [2021-10-08 16:05:49,812 INFO L226 Difference]: Without dead ends: 988 [2021-10-08 16:05:49,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2549.5ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:05:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-10-08 16:05:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 676. [2021-10-08 16:05:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 673 states have (on average 2.37295690936107) internal successors, (1597), 675 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1597 transitions. [2021-10-08 16:05:49,840 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1597 transitions. Word has length 82 [2021-10-08 16:05:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:49,840 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1597 transitions. [2021-10-08 16:05:49,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1597 transitions. [2021-10-08 16:05:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-08 16:05:49,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:49,842 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1] [2021-10-08 16:05:49,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:50,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-08 16:05:50,043 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash 470039990, now seen corresponding path program 79 times [2021-10-08 16:05:50,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:50,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245855670] [2021-10-08 16:05:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:50,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:52,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:52,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245855670] [2021-10-08 16:05:52,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245855670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:52,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178987473] [2021-10-08 16:05:52,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:05:52,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:52,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:52,808 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:52,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-08 16:05:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:53,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-08 16:05:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:54,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178987473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:54,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:54,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2021-10-08 16:05:54,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196722275] [2021-10-08 16:05:54,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-08 16:05:54,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-08 16:05:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:05:54,108 INFO L87 Difference]: Start difference. First operand 676 states and 1597 transitions. Second operand has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:55,727 INFO L93 Difference]: Finished difference Result 1326 states and 3133 transitions. [2021-10-08 16:05:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-08 16:05:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-08 16:05:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:55,730 INFO L225 Difference]: With dead ends: 1326 [2021-10-08 16:05:55,730 INFO L226 Difference]: Without dead ends: 1000 [2021-10-08 16:05:55,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2586.9ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:05:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-10-08 16:05:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 684. [2021-10-08 16:05:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 2.372980910425844) internal successors, (1616), 683 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1616 transitions. [2021-10-08 16:05:55,741 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1616 transitions. Word has length 83 [2021-10-08 16:05:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:55,742 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1616 transitions. [2021-10-08 16:05:55,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1616 transitions. [2021-10-08 16:05:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-08 16:05:55,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:55,743 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1] [2021-10-08 16:05:55,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:55,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:55,944 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:05:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1686340399, now seen corresponding path program 80 times [2021-10-08 16:05:55,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:55,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156978929] [2021-10-08 16:05:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:55,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:58,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:58,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156978929] [2021-10-08 16:05:58,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156978929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:58,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468007250] [2021-10-08 16:05:58,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:58,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:58,790 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:58,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-08 16:05:59,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:05:59,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:59,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-08 16:05:59,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:00,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468007250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:00,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:00,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2021-10-08 16:06:00,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43419438] [2021-10-08 16:06:00,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-08 16:06:00,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-08 16:06:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:06:00,116 INFO L87 Difference]: Start difference. First operand 684 states and 1616 transitions. Second operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:01,752 INFO L93 Difference]: Finished difference Result 1342 states and 3171 transitions. [2021-10-08 16:06:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-08 16:06:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-08 16:06:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:01,754 INFO L225 Difference]: With dead ends: 1342 [2021-10-08 16:06:01,754 INFO L226 Difference]: Without dead ends: 1012 [2021-10-08 16:06:01,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2634.3ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:06:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-10-08 16:06:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 692. [2021-10-08 16:06:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 689 states have (on average 2.3730043541364294) internal successors, (1635), 691 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1635 transitions. [2021-10-08 16:06:01,765 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1635 transitions. Word has length 84 [2021-10-08 16:06:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:01,765 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1635 transitions. [2021-10-08 16:06:01,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1635 transitions. [2021-10-08 16:06:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-08 16:06:01,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:01,768 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1] [2021-10-08 16:06:01,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-08 16:06:01,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:01,974 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 736947414, now seen corresponding path program 81 times [2021-10-08 16:06:01,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:01,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965695581] [2021-10-08 16:06:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:01,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:04,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:04,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965695581] [2021-10-08 16:06:04,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965695581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:04,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875852588] [2021-10-08 16:06:04,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:06:04,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:04,893 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:04,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-08 16:06:06,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-08 16:06:06,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:06,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-08 16:06:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:06,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875852588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:06,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:06,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2021-10-08 16:06:06,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910522536] [2021-10-08 16:06:06,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-08 16:06:06,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-08 16:06:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:06:06,343 INFO L87 Difference]: Start difference. First operand 692 states and 1635 transitions. Second operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:08,015 INFO L93 Difference]: Finished difference Result 1358 states and 3209 transitions. [2021-10-08 16:06:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-08 16:06:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-08 16:06:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:08,017 INFO L225 Difference]: With dead ends: 1358 [2021-10-08 16:06:08,017 INFO L226 Difference]: Without dead ends: 1024 [2021-10-08 16:06:08,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2723.4ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:06:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-08 16:06:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 700. [2021-10-08 16:06:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 2.3730272596843616) internal successors, (1654), 699 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1654 transitions. [2021-10-08 16:06:08,028 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1654 transitions. Word has length 85 [2021-10-08 16:06:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:08,029 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1654 transitions. [2021-10-08 16:06:08,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1654 transitions. [2021-10-08 16:06:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-08 16:06:08,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:08,031 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1] [2021-10-08 16:06:08,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:08,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:08,245 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1370535951, now seen corresponding path program 82 times [2021-10-08 16:06:08,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:08,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852066190] [2021-10-08 16:06:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:08,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:11,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:11,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852066190] [2021-10-08 16:06:11,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852066190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:11,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995481767] [2021-10-08 16:06:11,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:06:11,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:11,203 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:11,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-08 16:06:12,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:06:12,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:12,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-08 16:06:12,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:12,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995481767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:12,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:12,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2021-10-08 16:06:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636185636] [2021-10-08 16:06:12,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-08 16:06:12,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-08 16:06:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:06:12,635 INFO L87 Difference]: Start difference. First operand 700 states and 1654 transitions. Second operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:14,423 INFO L93 Difference]: Finished difference Result 1374 states and 3247 transitions. [2021-10-08 16:06:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-08 16:06:14,424 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-08 16:06:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:14,426 INFO L225 Difference]: With dead ends: 1374 [2021-10-08 16:06:14,426 INFO L226 Difference]: Without dead ends: 1036 [2021-10-08 16:06:14,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2767.7ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:06:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-08 16:06:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 708. [2021-10-08 16:06:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 705 states have (on average 2.373049645390071) internal successors, (1673), 707 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1673 transitions. [2021-10-08 16:06:14,439 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1673 transitions. Word has length 86 [2021-10-08 16:06:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:14,439 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1673 transitions. [2021-10-08 16:06:14,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1673 transitions. [2021-10-08 16:06:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-08 16:06:14,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:14,441 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1] [2021-10-08 16:06:14,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:14,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:14,641 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:14,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:14,643 INFO L82 PathProgramCache]: Analyzing trace with hash -463055882, now seen corresponding path program 83 times [2021-10-08 16:06:14,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:14,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70024578] [2021-10-08 16:06:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:14,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:17,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:17,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70024578] [2021-10-08 16:06:17,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70024578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:17,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109663530] [2021-10-08 16:06:17,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:06:17,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:17,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:17,747 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-08 16:06:18,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-08 16:06:18,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:18,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-08 16:06:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:19,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109663530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:19,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:19,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2021-10-08 16:06:19,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100766583] [2021-10-08 16:06:19,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-08 16:06:19,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-08 16:06:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:06:19,192 INFO L87 Difference]: Start difference. First operand 708 states and 1673 transitions. Second operand has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:21,326 INFO L93 Difference]: Finished difference Result 1390 states and 3285 transitions. [2021-10-08 16:06:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-08 16:06:21,326 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-08 16:06:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:21,328 INFO L225 Difference]: With dead ends: 1390 [2021-10-08 16:06:21,328 INFO L226 Difference]: Without dead ends: 1048 [2021-10-08 16:06:21,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2910.7ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:06:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-08 16:06:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 716. [2021-10-08 16:06:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 713 states have (on average 2.373071528751753) internal successors, (1692), 715 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1692 transitions. [2021-10-08 16:06:21,339 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1692 transitions. Word has length 87 [2021-10-08 16:06:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:21,339 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1692 transitions. [2021-10-08 16:06:21,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1692 transitions. [2021-10-08 16:06:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-08 16:06:21,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:21,341 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1] [2021-10-08 16:06:21,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-08 16:06:21,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:21,542 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1469827857, now seen corresponding path program 84 times [2021-10-08 16:06:21,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:21,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152384278] [2021-10-08 16:06:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:21,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:24,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:24,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152384278] [2021-10-08 16:06:24,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152384278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:24,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497202051] [2021-10-08 16:06:24,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:06:24,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:24,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:24,712 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:24,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-08 16:06:26,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-08 16:06:26,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-08 16:06:26,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497202051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:26,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:26,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2021-10-08 16:06:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342576052] [2021-10-08 16:06:26,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-08 16:06:26,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-08 16:06:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:06:26,232 INFO L87 Difference]: Start difference. First operand 716 states and 1692 transitions. Second operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:28,300 INFO L93 Difference]: Finished difference Result 1406 states and 3323 transitions. [2021-10-08 16:06:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 16:06:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-08 16:06:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:28,302 INFO L225 Difference]: With dead ends: 1406 [2021-10-08 16:06:28,302 INFO L226 Difference]: Without dead ends: 1060 [2021-10-08 16:06:28,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2982.9ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:06:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-08 16:06:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 724. [2021-10-08 16:06:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 721 states have (on average 2.3730929264909846) internal successors, (1711), 723 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1711 transitions. [2021-10-08 16:06:28,316 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1711 transitions. Word has length 88 [2021-10-08 16:06:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:28,316 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1711 transitions. [2021-10-08 16:06:28,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1711 transitions. [2021-10-08 16:06:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-08 16:06:28,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:28,318 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1] [2021-10-08 16:06:28,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:28,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-08 16:06:28,519 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:28,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:28,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1679979286, now seen corresponding path program 85 times [2021-10-08 16:06:28,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:28,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680977477] [2021-10-08 16:06:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:28,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:31,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:31,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680977477] [2021-10-08 16:06:31,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680977477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:31,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352738332] [2021-10-08 16:06:31,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:06:31,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:31,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:31,724 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:31,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-08 16:06:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:32,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-08 16:06:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:33,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352738332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:33,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2021-10-08 16:06:33,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893277379] [2021-10-08 16:06:33,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-08 16:06:33,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-08 16:06:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:06:33,257 INFO L87 Difference]: Start difference. First operand 724 states and 1711 transitions. Second operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:35,254 INFO L93 Difference]: Finished difference Result 1422 states and 3361 transitions. [2021-10-08 16:06:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-08 16:06:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-08 16:06:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:35,257 INFO L225 Difference]: With dead ends: 1422 [2021-10-08 16:06:35,257 INFO L226 Difference]: Without dead ends: 1072 [2021-10-08 16:06:35,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3013.6ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:06:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-08 16:06:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 732. [2021-10-08 16:06:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 729 states have (on average 2.373113854595336) internal successors, (1730), 731 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1730 transitions. [2021-10-08 16:06:35,268 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1730 transitions. Word has length 89 [2021-10-08 16:06:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:35,268 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1730 transitions. [2021-10-08 16:06:35,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1730 transitions. [2021-10-08 16:06:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-08 16:06:35,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:35,270 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1] [2021-10-08 16:06:35,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:35,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-08 16:06:35,471 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash 539752911, now seen corresponding path program 86 times [2021-10-08 16:06:35,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:35,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547982932] [2021-10-08 16:06:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:35,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:38,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:38,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547982932] [2021-10-08 16:06:38,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547982932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:38,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178457310] [2021-10-08 16:06:38,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:06:38,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:38,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:38,780 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:38,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-08 16:06:40,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:06:40,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-08 16:06:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:40,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178457310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:40,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2021-10-08 16:06:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292442594] [2021-10-08 16:06:40,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-08 16:06:40,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-08 16:06:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:06:40,274 INFO L87 Difference]: Start difference. First operand 732 states and 1730 transitions. Second operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:42,378 INFO L93 Difference]: Finished difference Result 1438 states and 3399 transitions. [2021-10-08 16:06:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-08 16:06:42,379 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-08 16:06:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:42,381 INFO L225 Difference]: With dead ends: 1438 [2021-10-08 16:06:42,381 INFO L226 Difference]: Without dead ends: 1084 [2021-10-08 16:06:42,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3088.4ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:06:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-10-08 16:06:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 740. [2021-10-08 16:06:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 737 states have (on average 2.373134328358209) internal successors, (1749), 739 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1749 transitions. [2021-10-08 16:06:42,392 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1749 transitions. Word has length 90 [2021-10-08 16:06:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:42,392 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1749 transitions. [2021-10-08 16:06:42,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1749 transitions. [2021-10-08 16:06:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-08 16:06:42,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:42,394 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1] [2021-10-08 16:06:42,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:42,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:42,595 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:42,596 INFO L82 PathProgramCache]: Analyzing trace with hash -447526346, now seen corresponding path program 87 times [2021-10-08 16:06:42,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:42,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067610899] [2021-10-08 16:06:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:42,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:45,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:45,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067610899] [2021-10-08 16:06:45,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067610899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:45,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43280519] [2021-10-08 16:06:45,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:06:45,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:45,967 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-08 16:06:47,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-08 16:06:47,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:47,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-08 16:06:47,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43280519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:47,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2021-10-08 16:06:47,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566651926] [2021-10-08 16:06:47,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-08 16:06:47,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-08 16:06:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:06:47,624 INFO L87 Difference]: Start difference. First operand 740 states and 1749 transitions. Second operand has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:49,793 INFO L93 Difference]: Finished difference Result 1454 states and 3437 transitions. [2021-10-08 16:06:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-08 16:06:49,793 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-08 16:06:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:49,795 INFO L225 Difference]: With dead ends: 1454 [2021-10-08 16:06:49,795 INFO L226 Difference]: Without dead ends: 1096 [2021-10-08 16:06:49,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3155.6ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:06:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-08 16:06:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 748. [2021-10-08 16:06:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 2.3731543624161073) internal successors, (1768), 747 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1768 transitions. [2021-10-08 16:06:49,806 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1768 transitions. Word has length 91 [2021-10-08 16:06:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:49,806 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1768 transitions. [2021-10-08 16:06:49,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1768 transitions. [2021-10-08 16:06:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-08 16:06:49,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:49,808 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1] [2021-10-08 16:06:49,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-08 16:06:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-08 16:06:50,015 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:50,015 INFO L82 PathProgramCache]: Analyzing trace with hash -988412241, now seen corresponding path program 88 times [2021-10-08 16:06:50,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:50,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310154040] [2021-10-08 16:06:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:50,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:53,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:53,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310154040] [2021-10-08 16:06:53,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310154040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:53,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203521961] [2021-10-08 16:06:53,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:06:53,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:53,441 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:53,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-08 16:06:54,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:06:54,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:54,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-08 16:06:54,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:54,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203521961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:54,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:54,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2021-10-08 16:06:54,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108853841] [2021-10-08 16:06:54,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-08 16:06:54,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-08 16:06:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:06:54,986 INFO L87 Difference]: Start difference. First operand 748 states and 1768 transitions. Second operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:57,291 INFO L93 Difference]: Finished difference Result 1470 states and 3475 transitions. [2021-10-08 16:06:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-08 16:06:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-10-08 16:06:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:57,294 INFO L225 Difference]: With dead ends: 1470 [2021-10-08 16:06:57,294 INFO L226 Difference]: Without dead ends: 1108 [2021-10-08 16:06:57,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3211.6ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:06:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-08 16:06:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 756. [2021-10-08 16:06:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 753 states have (on average 2.3731739707835326) internal successors, (1787), 755 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1787 transitions. [2021-10-08 16:06:57,316 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1787 transitions. Word has length 92 [2021-10-08 16:06:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:57,316 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1787 transitions. [2021-10-08 16:06:57,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1787 transitions. [2021-10-08 16:06:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-08 16:06:57,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:57,318 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1] [2021-10-08 16:06:57,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-08 16:06:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:57,528 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:06:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash -576005802, now seen corresponding path program 89 times [2021-10-08 16:06:57,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:57,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092772765] [2021-10-08 16:06:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:57,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:01,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:01,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092772765] [2021-10-08 16:07:01,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092772765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:01,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028535694] [2021-10-08 16:07:01,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:07:01,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:01,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:01,056 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-08 16:07:02,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-08 16:07:02,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:02,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-08 16:07:02,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:02,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028535694] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:02,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:02,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2021-10-08 16:07:02,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372220677] [2021-10-08 16:07:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-08 16:07:02,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-08 16:07:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:07:02,702 INFO L87 Difference]: Start difference. First operand 756 states and 1787 transitions. Second operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:05,080 INFO L93 Difference]: Finished difference Result 1486 states and 3513 transitions. [2021-10-08 16:07:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-08 16:07:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-08 16:07:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:05,082 INFO L225 Difference]: With dead ends: 1486 [2021-10-08 16:07:05,083 INFO L226 Difference]: Without dead ends: 1120 [2021-10-08 16:07:05,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3319.7ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:07:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-08 16:07:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 764. [2021-10-08 16:07:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 761 states have (on average 2.373193166885677) internal successors, (1806), 763 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1806 transitions. [2021-10-08 16:07:05,096 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1806 transitions. Word has length 93 [2021-10-08 16:07:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:05,096 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1806 transitions. [2021-10-08 16:07:05,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1806 transitions. [2021-10-08 16:07:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-08 16:07:05,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:05,098 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1] [2021-10-08 16:07:05,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:05,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-08 16:07:05,313 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:05,313 INFO L82 PathProgramCache]: Analyzing trace with hash -676308081, now seen corresponding path program 90 times [2021-10-08 16:07:05,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:05,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503903155] [2021-10-08 16:07:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:05,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:08,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:08,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503903155] [2021-10-08 16:07:08,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503903155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:08,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115975698] [2021-10-08 16:07:08,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:07:08,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:08,864 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:08,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-08 16:07:10,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-08 16:07:10,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:10,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-08 16:07:10,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:10,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115975698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:10,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:10,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2021-10-08 16:07:10,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109590697] [2021-10-08 16:07:10,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-08 16:07:10,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-08 16:07:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:07:10,577 INFO L87 Difference]: Start difference. First operand 764 states and 1806 transitions. Second operand has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:12,908 INFO L93 Difference]: Finished difference Result 1502 states and 3551 transitions. [2021-10-08 16:07:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-08 16:07:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-10-08 16:07:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:12,911 INFO L225 Difference]: With dead ends: 1502 [2021-10-08 16:07:12,911 INFO L226 Difference]: Without dead ends: 1132 [2021-10-08 16:07:12,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3359.0ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:07:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-10-08 16:07:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 772. [2021-10-08 16:07:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 769 states have (on average 2.373211963589077) internal successors, (1825), 771 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1825 transitions. [2021-10-08 16:07:12,924 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1825 transitions. Word has length 94 [2021-10-08 16:07:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1825 transitions. [2021-10-08 16:07:12,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1825 transitions. [2021-10-08 16:07:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-08 16:07:12,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:12,926 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1] [2021-10-08 16:07:12,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:13,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:13,126 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:13,127 INFO L82 PathProgramCache]: Analyzing trace with hash 509288566, now seen corresponding path program 91 times [2021-10-08 16:07:13,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:13,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555779071] [2021-10-08 16:07:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:13,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:16,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:16,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555779071] [2021-10-08 16:07:16,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555779071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:16,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584201158] [2021-10-08 16:07:16,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:07:16,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:16,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:16,781 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:16,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-08 16:07:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:18,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-08 16:07:18,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:18,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584201158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:18,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:18,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2021-10-08 16:07:18,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974997926] [2021-10-08 16:07:18,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-08 16:07:18,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-08 16:07:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:07:18,419 INFO L87 Difference]: Start difference. First operand 772 states and 1825 transitions. Second operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:20,995 INFO L93 Difference]: Finished difference Result 1518 states and 3589 transitions. [2021-10-08 16:07:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-08 16:07:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-08 16:07:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:20,997 INFO L225 Difference]: With dead ends: 1518 [2021-10-08 16:07:20,997 INFO L226 Difference]: Without dead ends: 1144 [2021-10-08 16:07:20,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3455.2ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:07:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-10-08 16:07:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 780. [2021-10-08 16:07:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 777 states have (on average 2.3732303732303732) internal successors, (1844), 779 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1844 transitions. [2021-10-08 16:07:21,012 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1844 transitions. Word has length 95 [2021-10-08 16:07:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:21,012 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1844 transitions. [2021-10-08 16:07:21,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1844 transitions. [2021-10-08 16:07:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-08 16:07:21,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:21,014 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1] [2021-10-08 16:07:21,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-08 16:07:21,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-08 16:07:21,229 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1391921041, now seen corresponding path program 92 times [2021-10-08 16:07:21,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:21,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045430059] [2021-10-08 16:07:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:21,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:24,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:24,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045430059] [2021-10-08 16:07:24,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045430059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:24,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037424252] [2021-10-08 16:07:24,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:07:24,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:24,948 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:24,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-08 16:07:26,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:07:26,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-08 16:07:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:26,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037424252] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:26,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:26,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2021-10-08 16:07:26,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029289022] [2021-10-08 16:07:26,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-08 16:07:26,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-08 16:07:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:07:26,644 INFO L87 Difference]: Start difference. First operand 780 states and 1844 transitions. Second operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:29,119 INFO L93 Difference]: Finished difference Result 1534 states and 3627 transitions. [2021-10-08 16:07:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-08 16:07:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-08 16:07:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:29,122 INFO L225 Difference]: With dead ends: 1534 [2021-10-08 16:07:29,122 INFO L226 Difference]: Without dead ends: 1156 [2021-10-08 16:07:29,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3516.5ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:07:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-08 16:07:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 788. [2021-10-08 16:07:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 2.3732484076433122) internal successors, (1863), 787 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1863 transitions. [2021-10-08 16:07:29,139 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1863 transitions. Word has length 96 [2021-10-08 16:07:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:29,140 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1863 transitions. [2021-10-08 16:07:29,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1863 transitions. [2021-10-08 16:07:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-08 16:07:29,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:29,142 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1] [2021-10-08 16:07:29,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:29,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-08 16:07:29,358 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:29,358 INFO L82 PathProgramCache]: Analyzing trace with hash -199876714, now seen corresponding path program 93 times [2021-10-08 16:07:29,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:29,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844325486] [2021-10-08 16:07:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:29,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:33,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:33,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844325486] [2021-10-08 16:07:33,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844325486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:33,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601111375] [2021-10-08 16:07:33,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:07:33,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:33,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:33,171 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:33,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-08 16:07:34,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-08 16:07:34,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:34,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-08 16:07:34,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:34,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601111375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:34,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:34,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2021-10-08 16:07:34,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698060582] [2021-10-08 16:07:34,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-08 16:07:34,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-08 16:07:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:07:34,955 INFO L87 Difference]: Start difference. First operand 788 states and 1863 transitions. Second operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:37,599 INFO L93 Difference]: Finished difference Result 1550 states and 3665 transitions. [2021-10-08 16:07:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-08 16:07:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-08 16:07:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:37,601 INFO L225 Difference]: With dead ends: 1550 [2021-10-08 16:07:37,601 INFO L226 Difference]: Without dead ends: 1168 [2021-10-08 16:07:37,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3608.3ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:07:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-08 16:07:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 796. [2021-10-08 16:07:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 793 states have (on average 2.373266078184111) internal successors, (1882), 795 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1882 transitions. [2021-10-08 16:07:37,613 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1882 transitions. Word has length 97 [2021-10-08 16:07:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1882 transitions. [2021-10-08 16:07:37,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1882 transitions. [2021-10-08 16:07:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-08 16:07:37,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:37,615 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2021-10-08 16:07:37,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-08 16:07:37,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-08 16:07:37,816 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1901208241, now seen corresponding path program 94 times [2021-10-08 16:07:37,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:37,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427904189] [2021-10-08 16:07:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:37,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:41,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:41,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427904189] [2021-10-08 16:07:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427904189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:41,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137910912] [2021-10-08 16:07:41,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:07:41,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:41,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:41,692 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:41,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-08 16:07:43,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:07:43,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:43,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-08 16:07:43,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:43,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137910912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:43,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:43,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2021-10-08 16:07:43,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19717808] [2021-10-08 16:07:43,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-08 16:07:43,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-08 16:07:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:07:43,450 INFO L87 Difference]: Start difference. First operand 796 states and 1882 transitions. Second operand has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:46,050 INFO L93 Difference]: Finished difference Result 1566 states and 3703 transitions. [2021-10-08 16:07:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-08 16:07:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-08 16:07:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:46,052 INFO L225 Difference]: With dead ends: 1566 [2021-10-08 16:07:46,052 INFO L226 Difference]: Without dead ends: 1180 [2021-10-08 16:07:46,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3631.8ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:07:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-10-08 16:07:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 804. [2021-10-08 16:07:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 801 states have (on average 2.3732833957553057) internal successors, (1901), 803 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1901 transitions. [2021-10-08 16:07:46,063 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1901 transitions. Word has length 98 [2021-10-08 16:07:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:46,064 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1901 transitions. [2021-10-08 16:07:46,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1901 transitions. [2021-10-08 16:07:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-08 16:07:46,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:46,065 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1] [2021-10-08 16:07:46,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-08 16:07:46,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:46,266 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:46,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1192089270, now seen corresponding path program 95 times [2021-10-08 16:07:46,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:46,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010601069] [2021-10-08 16:07:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:46,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:50,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:50,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010601069] [2021-10-08 16:07:50,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010601069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:50,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525378623] [2021-10-08 16:07:50,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:07:50,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:50,194 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:50,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-08 16:07:51,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-08 16:07:51,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:51,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-08 16:07:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525378623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:52,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:52,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2021-10-08 16:07:52,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096127266] [2021-10-08 16:07:52,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-08 16:07:52,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-08 16:07:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:07:52,042 INFO L87 Difference]: Start difference. First operand 804 states and 1901 transitions. Second operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:54,749 INFO L93 Difference]: Finished difference Result 1582 states and 3741 transitions. [2021-10-08 16:07:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-08 16:07:54,749 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-08 16:07:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:54,751 INFO L225 Difference]: With dead ends: 1582 [2021-10-08 16:07:54,752 INFO L226 Difference]: Without dead ends: 1192 [2021-10-08 16:07:54,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3711.8ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:07:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-10-08 16:07:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 812. [2021-10-08 16:07:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 809 states have (on average 2.373300370828183) internal successors, (1920), 811 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1920 transitions. [2021-10-08 16:07:54,763 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1920 transitions. Word has length 99 [2021-10-08 16:07:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:54,763 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1920 transitions. [2021-10-08 16:07:54,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1920 transitions. [2021-10-08 16:07:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-08 16:07:54,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:54,765 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1] [2021-10-08 16:07:54,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:54,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-08 16:07:54,970 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:07:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:54,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1699935697, now seen corresponding path program 96 times [2021-10-08 16:07:54,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:54,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273233564] [2021-10-08 16:07:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:54,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:58,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:58,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273233564] [2021-10-08 16:07:58,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273233564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:58,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485300051] [2021-10-08 16:07:58,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:07:58,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:58,963 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:58,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-08 16:08:00,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-08 16:08:00,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:00,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-08 16:08:00,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:00,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485300051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:00,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:00,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2021-10-08 16:08:00,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265599641] [2021-10-08 16:08:00,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-08 16:08:00,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-08 16:08:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:08:00,864 INFO L87 Difference]: Start difference. First operand 812 states and 1920 transitions. Second operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:03,806 INFO L93 Difference]: Finished difference Result 1598 states and 3779 transitions. [2021-10-08 16:08:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-08 16:08:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-08 16:08:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:03,808 INFO L225 Difference]: With dead ends: 1598 [2021-10-08 16:08:03,808 INFO L226 Difference]: Without dead ends: 1204 [2021-10-08 16:08:03,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3786.6ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:08:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-08 16:08:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 820. [2021-10-08 16:08:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 817 states have (on average 2.3733170134638923) internal successors, (1939), 819 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1939 transitions. [2021-10-08 16:08:03,827 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1939 transitions. Word has length 100 [2021-10-08 16:08:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:03,828 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1939 transitions. [2021-10-08 16:08:03,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1939 transitions. [2021-10-08 16:08:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-08 16:08:03,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:03,830 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1] [2021-10-08 16:08:03,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-08 16:08:04,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:04,045 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:04,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1158396458, now seen corresponding path program 97 times [2021-10-08 16:08:04,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:04,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081980789] [2021-10-08 16:08:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:04,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:08,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:08,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081980789] [2021-10-08 16:08:08,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081980789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:08,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945460921] [2021-10-08 16:08:08,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:08:08,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:08,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:08,160 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:08,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-08 16:08:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-08 16:08:09,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:09,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945460921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:09,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:09,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2021-10-08 16:08:09,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869869043] [2021-10-08 16:08:09,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-08 16:08:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-08 16:08:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:08:09,979 INFO L87 Difference]: Start difference. First operand 820 states and 1939 transitions. Second operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:12,920 INFO L93 Difference]: Finished difference Result 1614 states and 3817 transitions. [2021-10-08 16:08:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-08 16:08:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-08 16:08:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:12,923 INFO L225 Difference]: With dead ends: 1614 [2021-10-08 16:08:12,923 INFO L226 Difference]: Without dead ends: 1216 [2021-10-08 16:08:12,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3897.5ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:08:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-10-08 16:08:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 828. [2021-10-08 16:08:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 825 states have (on average 2.3733333333333335) internal successors, (1958), 827 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1958 transitions. [2021-10-08 16:08:12,936 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1958 transitions. Word has length 101 [2021-10-08 16:08:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:12,936 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1958 transitions. [2021-10-08 16:08:12,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1958 transitions. [2021-10-08 16:08:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-08 16:08:12,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:12,938 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1] [2021-10-08 16:08:12,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:13,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:13,145 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1550549233, now seen corresponding path program 98 times [2021-10-08 16:08:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:13,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621401003] [2021-10-08 16:08:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:13,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:17,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:17,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621401003] [2021-10-08 16:08:17,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621401003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:17,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922589163] [2021-10-08 16:08:17,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:08:17,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:17,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:17,317 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:17,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-08 16:08:18,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:08:18,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:18,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-08 16:08:18,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:19,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922589163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:19,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:19,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2021-10-08 16:08:19,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779049242] [2021-10-08 16:08:19,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-08 16:08:19,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-08 16:08:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:08:19,217 INFO L87 Difference]: Start difference. First operand 828 states and 1958 transitions. Second operand has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:22,305 INFO L93 Difference]: Finished difference Result 1630 states and 3855 transitions. [2021-10-08 16:08:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-08 16:08:22,305 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-08 16:08:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:22,308 INFO L225 Difference]: With dead ends: 1630 [2021-10-08 16:08:22,308 INFO L226 Difference]: Without dead ends: 1228 [2021-10-08 16:08:22,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3957.0ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:08:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-10-08 16:08:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 836. [2021-10-08 16:08:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 833 states have (on average 2.3733493397358942) internal successors, (1977), 835 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1977 transitions. [2021-10-08 16:08:22,319 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1977 transitions. Word has length 102 [2021-10-08 16:08:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:22,320 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1977 transitions. [2021-10-08 16:08:22,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1977 transitions. [2021-10-08 16:08:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-08 16:08:22,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:22,321 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1] [2021-10-08 16:08:22,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:22,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:22,522 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:22,523 INFO L82 PathProgramCache]: Analyzing trace with hash -822383370, now seen corresponding path program 99 times [2021-10-08 16:08:22,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:22,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784117187] [2021-10-08 16:08:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:22,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:26,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:26,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784117187] [2021-10-08 16:08:26,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784117187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:26,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205346555] [2021-10-08 16:08:26,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:08:26,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:26,832 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:26,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-08 16:08:28,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-08 16:08:28,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:28,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-08 16:08:28,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:28,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205346555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:28,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:28,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2021-10-08 16:08:28,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007146470] [2021-10-08 16:08:28,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-08 16:08:28,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-08 16:08:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:08:28,807 INFO L87 Difference]: Start difference. First operand 836 states and 1977 transitions. Second operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:31,796 INFO L93 Difference]: Finished difference Result 1646 states and 3893 transitions. [2021-10-08 16:08:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-08 16:08:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-08 16:08:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:31,799 INFO L225 Difference]: With dead ends: 1646 [2021-10-08 16:08:31,799 INFO L226 Difference]: Without dead ends: 1240 [2021-10-08 16:08:31,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4052.9ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:08:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-10-08 16:08:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 844. [2021-10-08 16:08:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 2.3733650416171224) internal successors, (1996), 843 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1996 transitions. [2021-10-08 16:08:31,811 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1996 transitions. Word has length 103 [2021-10-08 16:08:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:31,811 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1996 transitions. [2021-10-08 16:08:31,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1996 transitions. [2021-10-08 16:08:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-08 16:08:31,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:31,812 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1] [2021-10-08 16:08:31,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-08 16:08:32,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:32,013 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:32,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:32,014 INFO L82 PathProgramCache]: Analyzing trace with hash 275921903, now seen corresponding path program 100 times [2021-10-08 16:08:32,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:32,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202788929] [2021-10-08 16:08:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:32,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:36,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202788929] [2021-10-08 16:08:36,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202788929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904662124] [2021-10-08 16:08:36,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:08:36,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:36,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:36,370 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:36,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-08 16:08:38,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:08:38,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:38,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-08 16:08:38,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:38,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904662124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:38,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:38,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2021-10-08 16:08:38,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932750771] [2021-10-08 16:08:38,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-08 16:08:38,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-08 16:08:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:08:38,374 INFO L87 Difference]: Start difference. First operand 844 states and 1996 transitions. Second operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:41,503 INFO L93 Difference]: Finished difference Result 1662 states and 3931 transitions. [2021-10-08 16:08:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-08 16:08:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-08 16:08:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:41,505 INFO L225 Difference]: With dead ends: 1662 [2021-10-08 16:08:41,506 INFO L226 Difference]: Without dead ends: 1252 [2021-10-08 16:08:41,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4130.9ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:08:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-08 16:08:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 852. [2021-10-08 16:08:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 2.3733804475853946) internal successors, (2015), 851 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2015 transitions. [2021-10-08 16:08:41,518 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2015 transitions. Word has length 104 [2021-10-08 16:08:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:41,518 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2015 transitions. [2021-10-08 16:08:41,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2015 transitions. [2021-10-08 16:08:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-08 16:08:41,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:41,520 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1] [2021-10-08 16:08:41,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:41,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-08 16:08:41,721 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash -36353002, now seen corresponding path program 101 times [2021-10-08 16:08:41,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:41,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78288245] [2021-10-08 16:08:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:41,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:46,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:46,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78288245] [2021-10-08 16:08:46,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78288245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:46,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024111317] [2021-10-08 16:08:46,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:08:46,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:46,155 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:46,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-08 16:08:47,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-08 16:08:47,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:47,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-08 16:08:47,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:48,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024111317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:48,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:48,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2021-10-08 16:08:48,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880376970] [2021-10-08 16:08:48,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-08 16:08:48,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-08 16:08:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:08:48,160 INFO L87 Difference]: Start difference. First operand 852 states and 2015 transitions. Second operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:51,398 INFO L93 Difference]: Finished difference Result 1678 states and 3969 transitions. [2021-10-08 16:08:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-08 16:08:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-08 16:08:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:51,401 INFO L225 Difference]: With dead ends: 1678 [2021-10-08 16:08:51,401 INFO L226 Difference]: Without dead ends: 1264 [2021-10-08 16:08:51,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4212.5ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:08:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-08 16:08:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 860. [2021-10-08 16:08:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 857 states have (on average 2.3733955659276544) internal successors, (2034), 859 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2034 transitions. [2021-10-08 16:08:51,416 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2034 transitions. Word has length 105 [2021-10-08 16:08:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:51,416 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2034 transitions. [2021-10-08 16:08:51,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2034 transitions. [2021-10-08 16:08:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-08 16:08:51,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:51,418 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1] [2021-10-08 16:08:51,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-08 16:08:51,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-08 16:08:51,619 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:08:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1126940465, now seen corresponding path program 102 times [2021-10-08 16:08:51,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:51,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871664153] [2021-10-08 16:08:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:51,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:56,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:56,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871664153] [2021-10-08 16:08:56,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871664153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:56,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754116900] [2021-10-08 16:08:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:08:56,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:56,164 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:56,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-08 16:08:58,054 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-08 16:08:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-08 16:08:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:58,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754116900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:58,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:58,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2021-10-08 16:08:58,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088407709] [2021-10-08 16:08:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-08 16:08:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-08 16:08:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:08:58,314 INFO L87 Difference]: Start difference. First operand 860 states and 2034 transitions. Second operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:01,967 INFO L93 Difference]: Finished difference Result 1694 states and 4007 transitions. [2021-10-08 16:09:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-08 16:09:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-08 16:09:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:01,969 INFO L225 Difference]: With dead ends: 1694 [2021-10-08 16:09:01,970 INFO L226 Difference]: Without dead ends: 1276 [2021-10-08 16:09:01,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4284.4ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:09:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-10-08 16:09:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 868. [2021-10-08 16:09:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 865 states have (on average 2.3734104046242774) internal successors, (2053), 867 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2053 transitions. [2021-10-08 16:09:01,982 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2053 transitions. Word has length 106 [2021-10-08 16:09:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:01,982 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2053 transitions. [2021-10-08 16:09:01,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2053 transitions. [2021-10-08 16:09:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-08 16:09:01,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:01,984 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1] [2021-10-08 16:09:02,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:02,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-08 16:09:02,184 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash -575413450, now seen corresponding path program 103 times [2021-10-08 16:09:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:02,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267322655] [2021-10-08 16:09:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:02,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:06,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:06,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267322655] [2021-10-08 16:09:06,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267322655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:06,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750020618] [2021-10-08 16:09:06,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:09:06,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:06,836 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:06,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-08 16:09:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:08,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-08 16:09:08,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:08,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750020618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:08,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:08,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2021-10-08 16:09:08,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675298270] [2021-10-08 16:09:08,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-08 16:09:08,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-08 16:09:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:09:08,832 INFO L87 Difference]: Start difference. First operand 868 states and 2053 transitions. Second operand has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:12,437 INFO L93 Difference]: Finished difference Result 1710 states and 4045 transitions. [2021-10-08 16:09:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-08 16:09:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-08 16:09:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:12,439 INFO L225 Difference]: With dead ends: 1710 [2021-10-08 16:09:12,440 INFO L226 Difference]: Without dead ends: 1288 [2021-10-08 16:09:12,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4424.8ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:09:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-10-08 16:09:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 876. [2021-10-08 16:09:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 873 states have (on average 2.3734249713631157) internal successors, (2072), 875 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2072 transitions. [2021-10-08 16:09:12,453 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2072 transitions. Word has length 107 [2021-10-08 16:09:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:12,453 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2072 transitions. [2021-10-08 16:09:12,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,453 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2072 transitions. [2021-10-08 16:09:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-08 16:09:12,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:12,455 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1] [2021-10-08 16:09:12,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:12,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-08 16:09:12,656 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:12,657 INFO L82 PathProgramCache]: Analyzing trace with hash -657945169, now seen corresponding path program 104 times [2021-10-08 16:09:12,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:12,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77855690] [2021-10-08 16:09:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:12,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:17,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:17,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77855690] [2021-10-08 16:09:17,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77855690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:17,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228544982] [2021-10-08 16:09:17,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:09:17,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:17,361 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:17,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-08 16:09:19,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:09:19,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:19,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-08 16:09:19,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:19,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228544982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:19,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:19,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2021-10-08 16:09:19,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129229992] [2021-10-08 16:09:19,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-08 16:09:19,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-08 16:09:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:09:19,478 INFO L87 Difference]: Start difference. First operand 876 states and 2072 transitions. Second operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:23,232 INFO L93 Difference]: Finished difference Result 1726 states and 4083 transitions. [2021-10-08 16:09:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-08 16:09:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-08 16:09:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:23,234 INFO L225 Difference]: With dead ends: 1726 [2021-10-08 16:09:23,234 INFO L226 Difference]: Without dead ends: 1300 [2021-10-08 16:09:23,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4470.2ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:09:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-08 16:09:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 884. [2021-10-08 16:09:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 881 states have (on average 2.3734392735527807) internal successors, (2091), 883 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2091 transitions. [2021-10-08 16:09:23,249 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2091 transitions. Word has length 108 [2021-10-08 16:09:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:23,250 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 2091 transitions. [2021-10-08 16:09:23,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2091 transitions. [2021-10-08 16:09:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-08 16:09:23,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:23,251 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1] [2021-10-08 16:09:23,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:23,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-08 16:09:23,452 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:23,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1078538838, now seen corresponding path program 105 times [2021-10-08 16:09:23,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:23,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484156482] [2021-10-08 16:09:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:23,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:28,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:28,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484156482] [2021-10-08 16:09:28,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484156482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:28,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599955397] [2021-10-08 16:09:28,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:09:28,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:28,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:28,218 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:28,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-08 16:09:30,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-08 16:09:30,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:30,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-08 16:09:30,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:30,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599955397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:30,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:30,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2021-10-08 16:09:30,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053541178] [2021-10-08 16:09:30,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-08 16:09:30,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-08 16:09:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:09:30,447 INFO L87 Difference]: Start difference. First operand 884 states and 2091 transitions. Second operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:34,279 INFO L93 Difference]: Finished difference Result 1742 states and 4121 transitions. [2021-10-08 16:09:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-08 16:09:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-08 16:09:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:34,282 INFO L225 Difference]: With dead ends: 1742 [2021-10-08 16:09:34,282 INFO L226 Difference]: Without dead ends: 1312 [2021-10-08 16:09:34,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4534.6ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:09:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-08 16:09:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 892. [2021-10-08 16:09:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 889 states have (on average 2.373453318335208) internal successors, (2110), 891 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2110 transitions. [2021-10-08 16:09:34,299 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2110 transitions. Word has length 109 [2021-10-08 16:09:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:34,300 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2110 transitions. [2021-10-08 16:09:34,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2110 transitions. [2021-10-08 16:09:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-08 16:09:34,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:34,301 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1] [2021-10-08 16:09:34,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-08 16:09:34,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:34,502 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash -925031793, now seen corresponding path program 106 times [2021-10-08 16:09:34,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:34,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575611865] [2021-10-08 16:09:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:34,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:39,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:39,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575611865] [2021-10-08 16:09:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575611865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:39,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924237466] [2021-10-08 16:09:39,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:09:39,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:39,434 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:39,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-08 16:09:41,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:09:41,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:41,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-08 16:09:41,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924237466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:41,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:41,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2021-10-08 16:09:41,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414308188] [2021-10-08 16:09:41,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-08 16:09:41,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:41,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-08 16:09:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:09:41,551 INFO L87 Difference]: Start difference. First operand 892 states and 2110 transitions. Second operand has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:45,543 INFO L93 Difference]: Finished difference Result 1758 states and 4159 transitions. [2021-10-08 16:09:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-08 16:09:45,544 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-08 16:09:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:45,546 INFO L225 Difference]: With dead ends: 1758 [2021-10-08 16:09:45,546 INFO L226 Difference]: Without dead ends: 1324 [2021-10-08 16:09:45,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4647.2ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:09:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-10-08 16:09:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 900. [2021-10-08 16:09:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 897 states have (on average 2.3734671125975475) internal successors, (2129), 899 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2129 transitions. [2021-10-08 16:09:45,559 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2129 transitions. Word has length 110 [2021-10-08 16:09:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:45,560 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2129 transitions. [2021-10-08 16:09:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2129 transitions. [2021-10-08 16:09:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-08 16:09:45,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:45,561 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1] [2021-10-08 16:09:45,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-08 16:09:45,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-08 16:09:45,762 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1388788086, now seen corresponding path program 107 times [2021-10-08 16:09:45,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:45,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3320583] [2021-10-08 16:09:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:45,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:50,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:50,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3320583] [2021-10-08 16:09:50,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3320583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:50,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641305515] [2021-10-08 16:09:50,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:09:50,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:50,705 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:50,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-08 16:09:52,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-08 16:09:52,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-08 16:09:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:53,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641305515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:53,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:53,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2021-10-08 16:09:53,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056389286] [2021-10-08 16:09:53,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-08 16:09:53,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-08 16:09:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:09:53,020 INFO L87 Difference]: Start difference. First operand 900 states and 2129 transitions. Second operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:56,898 INFO L93 Difference]: Finished difference Result 1774 states and 4197 transitions. [2021-10-08 16:09:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-08 16:09:56,899 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-10-08 16:09:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:56,902 INFO L225 Difference]: With dead ends: 1774 [2021-10-08 16:09:56,902 INFO L226 Difference]: Without dead ends: 1336 [2021-10-08 16:09:56,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4705.3ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:09:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-10-08 16:09:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 908. [2021-10-08 16:09:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 905 states have (on average 2.3734806629834253) internal successors, (2148), 907 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 2148 transitions. [2021-10-08 16:09:56,916 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 2148 transitions. Word has length 111 [2021-10-08 16:09:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:56,916 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 2148 transitions. [2021-10-08 16:09:56,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 2148 transitions. [2021-10-08 16:09:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-08 16:09:56,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:56,918 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1] [2021-10-08 16:09:56,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-08 16:09:57,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-08 16:09:57,119 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:09:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash 102760303, now seen corresponding path program 108 times [2021-10-08 16:09:57,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:57,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897339462] [2021-10-08 16:09:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:57,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:02,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:02,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897339462] [2021-10-08 16:10:02,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897339462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:02,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737135119] [2021-10-08 16:10:02,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:10:02,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:02,188 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:02,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-08 16:10:04,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-08 16:10:04,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:04,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-08 16:10:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:04,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737135119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:04,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:04,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2021-10-08 16:10:04,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425785405] [2021-10-08 16:10:04,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-08 16:10:04,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-08 16:10:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:10:04,534 INFO L87 Difference]: Start difference. First operand 908 states and 2148 transitions. Second operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:08,720 INFO L93 Difference]: Finished difference Result 1790 states and 4235 transitions. [2021-10-08 16:10:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:10:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-08 16:10:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:08,723 INFO L225 Difference]: With dead ends: 1790 [2021-10-08 16:10:08,723 INFO L226 Difference]: Without dead ends: 1348 [2021-10-08 16:10:08,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4827.6ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:10:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-10-08 16:10:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 916. [2021-10-08 16:10:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 913 states have (on average 2.3734939759036147) internal successors, (2167), 915 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2167 transitions. [2021-10-08 16:10:08,735 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2167 transitions. Word has length 112 [2021-10-08 16:10:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:08,736 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2167 transitions. [2021-10-08 16:10:08,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2167 transitions. [2021-10-08 16:10:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-08 16:10:08,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:08,737 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1] [2021-10-08 16:10:08,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:08,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:08,938 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:10:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:08,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1109395306, now seen corresponding path program 109 times [2021-10-08 16:10:08,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:08,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483456501] [2021-10-08 16:10:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:08,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:14,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:14,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483456501] [2021-10-08 16:10:14,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483456501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:14,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471404023] [2021-10-08 16:10:14,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:10:14,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:14,089 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:14,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-08 16:10:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:16,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-08 16:10:16,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:16,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471404023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:16,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2021-10-08 16:10:16,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545209841] [2021-10-08 16:10:16,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-08 16:10:16,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-08 16:10:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:10:16,326 INFO L87 Difference]: Start difference. First operand 916 states and 2167 transitions. Second operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:20,553 INFO L93 Difference]: Finished difference Result 1806 states and 4273 transitions. [2021-10-08 16:10:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-08 16:10:20,553 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-08 16:10:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:20,556 INFO L225 Difference]: With dead ends: 1806 [2021-10-08 16:10:20,556 INFO L226 Difference]: Without dead ends: 1360 [2021-10-08 16:10:20,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4908.3ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:10:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-10-08 16:10:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 924. [2021-10-08 16:10:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 921 states have (on average 2.3735070575461457) internal successors, (2186), 923 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2186 transitions. [2021-10-08 16:10:20,569 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2186 transitions. Word has length 113 [2021-10-08 16:10:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:20,569 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2186 transitions. [2021-10-08 16:10:20,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2186 transitions. [2021-10-08 16:10:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-08 16:10:20,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:20,570 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1] [2021-10-08 16:10:20,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-08 16:10:20,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:20,771 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:10:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash -31513521, now seen corresponding path program 110 times [2021-10-08 16:10:20,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:20,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736510727] [2021-10-08 16:10:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:20,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:26,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:26,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736510727] [2021-10-08 16:10:26,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736510727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:26,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640530243] [2021-10-08 16:10:26,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:10:26,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:26,036 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:26,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-08 16:10:28,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:10:28,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:28,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-08 16:10:28,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:28,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640530243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:28,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:28,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2021-10-08 16:10:28,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874429611] [2021-10-08 16:10:28,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-08 16:10:28,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-08 16:10:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:10:28,377 INFO L87 Difference]: Start difference. First operand 924 states and 2186 transitions. Second operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:33,012 INFO L93 Difference]: Finished difference Result 1822 states and 4311 transitions. [2021-10-08 16:10:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-08 16:10:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-10-08 16:10:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:33,015 INFO L225 Difference]: With dead ends: 1822 [2021-10-08 16:10:33,015 INFO L226 Difference]: Without dead ends: 1372 [2021-10-08 16:10:33,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4999.2ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:10:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-10-08 16:10:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 932. [2021-10-08 16:10:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 2.373519913885899) internal successors, (2205), 931 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2205 transitions. [2021-10-08 16:10:33,029 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2205 transitions. Word has length 114 [2021-10-08 16:10:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:33,029 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2205 transitions. [2021-10-08 16:10:33,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2205 transitions. [2021-10-08 16:10:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-08 16:10:33,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:33,031 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1] [2021-10-08 16:10:33,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-08 16:10:33,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-10-08 16:10:33,236 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:10:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash -976916554, now seen corresponding path program 111 times [2021-10-08 16:10:33,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:33,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502726423] [2021-10-08 16:10:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:33,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:38,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:38,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502726423] [2021-10-08 16:10:38,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502726423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:38,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326591493] [2021-10-08 16:10:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:10:38,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:38,600 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:38,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-08 16:10:40,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-08 16:10:40,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:40,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-08 16:10:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:41,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326591493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:41,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:41,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2021-10-08 16:10:41,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205782508] [2021-10-08 16:10:41,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-08 16:10:41,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-08 16:10:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:10:41,197 INFO L87 Difference]: Start difference. First operand 932 states and 2205 transitions. Second operand has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:45,757 INFO L93 Difference]: Finished difference Result 1838 states and 4349 transitions. [2021-10-08 16:10:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-08 16:10:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-08 16:10:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:45,759 INFO L225 Difference]: With dead ends: 1838 [2021-10-08 16:10:45,760 INFO L226 Difference]: Without dead ends: 1384 [2021-10-08 16:10:45,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5110.6ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:10:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-10-08 16:10:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 940. [2021-10-08 16:10:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 937 states have (on average 2.3735325506937035) internal successors, (2224), 939 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2224 transitions. [2021-10-08 16:10:45,775 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2224 transitions. Word has length 115 [2021-10-08 16:10:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:45,775 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 2224 transitions. [2021-10-08 16:10:45,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2224 transitions. [2021-10-08 16:10:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-08 16:10:45,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:45,777 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1] [2021-10-08 16:10:45,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-10-08 16:10:45,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-08 16:10:45,978 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:10:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:45,979 INFO L82 PathProgramCache]: Analyzing trace with hash -219639505, now seen corresponding path program 112 times [2021-10-08 16:10:45,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:45,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903032613] [2021-10-08 16:10:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:45,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:51,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:51,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903032613] [2021-10-08 16:10:51,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903032613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:51,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610680377] [2021-10-08 16:10:51,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:10:51,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:51,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:51,426 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:51,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-08 16:10:53,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:10:53,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:53,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-08 16:10:53,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:53,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610680377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:53,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:53,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2021-10-08 16:10:53,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258478581] [2021-10-08 16:10:53,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-08 16:10:53,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-08 16:10:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:10:53,786 INFO L87 Difference]: Start difference. First operand 940 states and 2224 transitions. Second operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:58,494 INFO L93 Difference]: Finished difference Result 1854 states and 4387 transitions. [2021-10-08 16:10:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-08 16:10:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-10-08 16:10:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:58,497 INFO L225 Difference]: With dead ends: 1854 [2021-10-08 16:10:58,497 INFO L226 Difference]: Without dead ends: 1396 [2021-10-08 16:10:58,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5196.1ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:10:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-08 16:10:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 948. [2021-10-08 16:10:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 945 states have (on average 2.3735449735449734) internal successors, (2243), 947 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2243 transitions. [2021-10-08 16:10:58,510 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2243 transitions. Word has length 116 [2021-10-08 16:10:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:58,510 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2243 transitions. [2021-10-08 16:10:58,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2243 transitions. [2021-10-08 16:10:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-08 16:10:58,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:58,512 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1] [2021-10-08 16:10:58,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:58,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:58,713 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:10:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1781112534, now seen corresponding path program 113 times [2021-10-08 16:10:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:58,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154019300] [2021-10-08 16:10:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:58,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:04,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:04,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154019300] [2021-10-08 16:11:04,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154019300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:04,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921952281] [2021-10-08 16:11:04,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:11:04,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:04,274 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:04,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-08 16:11:06,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-08 16:11:06,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:06,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-08 16:11:06,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:06,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921952281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:06,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:06,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2021-10-08 16:11:06,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517917547] [2021-10-08 16:11:06,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-08 16:11:06,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-08 16:11:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:11:06,802 INFO L87 Difference]: Start difference. First operand 948 states and 2243 transitions. Second operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:11,652 INFO L93 Difference]: Finished difference Result 1870 states and 4425 transitions. [2021-10-08 16:11:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-08 16:11:11,653 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-08 16:11:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:11,655 INFO L225 Difference]: With dead ends: 1870 [2021-10-08 16:11:11,655 INFO L226 Difference]: Without dead ends: 1408 [2021-10-08 16:11:11,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5306.3ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:11:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-10-08 16:11:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 956. [2021-10-08 16:11:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 953 states have (on average 2.373557187827912) internal successors, (2262), 955 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2262 transitions. [2021-10-08 16:11:11,670 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2262 transitions. Word has length 117 [2021-10-08 16:11:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:11,670 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 2262 transitions. [2021-10-08 16:11:11,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2262 transitions. [2021-10-08 16:11:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-08 16:11:11,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:11,672 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1] [2021-10-08 16:11:11,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-08 16:11:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-08 16:11:11,873 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:11:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -620083697, now seen corresponding path program 114 times [2021-10-08 16:11:11,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:11,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368230797] [2021-10-08 16:11:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:11,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:17,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:17,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368230797] [2021-10-08 16:11:17,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368230797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:17,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773007776] [2021-10-08 16:11:17,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:11:17,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:17,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:17,535 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:17,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-08 16:11:19,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-08 16:11:19,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:19,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-08 16:11:19,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:20,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773007776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:20,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:20,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2021-10-08 16:11:20,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444799555] [2021-10-08 16:11:20,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-08 16:11:20,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-08 16:11:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:11:20,149 INFO L87 Difference]: Start difference. First operand 956 states and 2262 transitions. Second operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:25,590 INFO L93 Difference]: Finished difference Result 1886 states and 4463 transitions. [2021-10-08 16:11:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-10-08 16:11:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-08 16:11:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:25,593 INFO L225 Difference]: With dead ends: 1886 [2021-10-08 16:11:25,594 INFO L226 Difference]: Without dead ends: 1420 [2021-10-08 16:11:25,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5389.3ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:11:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-08 16:11:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 964. [2021-10-08 16:11:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 961 states have (on average 2.3735691987513006) internal successors, (2281), 963 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2281 transitions. [2021-10-08 16:11:25,614 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2281 transitions. Word has length 118 [2021-10-08 16:11:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:25,614 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2281 transitions. [2021-10-08 16:11:25,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2281 transitions. [2021-10-08 16:11:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-08 16:11:25,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:25,617 INFO L512 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1] [2021-10-08 16:11:25,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-08 16:11:25,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-08 16:11:25,831 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:11:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:25,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2042722826, now seen corresponding path program 115 times [2021-10-08 16:11:25,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:25,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340591189] [2021-10-08 16:11:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:25,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:31,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:31,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340591189] [2021-10-08 16:11:31,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340591189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:31,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162867608] [2021-10-08 16:11:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:11:31,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:31,611 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:31,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-08 16:11:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:33,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 118 conjunts are in the unsatisfiable core [2021-10-08 16:11:33,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:34,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162867608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:34,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:34,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2021-10-08 16:11:34,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863206068] [2021-10-08 16:11:34,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-08 16:11:34,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-08 16:11:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:11:34,055 INFO L87 Difference]: Start difference. First operand 964 states and 2281 transitions. Second operand has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:39,218 INFO L93 Difference]: Finished difference Result 1902 states and 4501 transitions. [2021-10-08 16:11:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-10-08 16:11:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-10-08 16:11:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:39,221 INFO L225 Difference]: With dead ends: 1902 [2021-10-08 16:11:39,222 INFO L226 Difference]: Without dead ends: 1432 [2021-10-08 16:11:39,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5487.8ms TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:11:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-08 16:11:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 972. [2021-10-08 16:11:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 969 states have (on average 2.3735810113519094) internal successors, (2300), 971 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2300 transitions. [2021-10-08 16:11:39,237 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2300 transitions. Word has length 119 [2021-10-08 16:11:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:39,237 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2300 transitions. [2021-10-08 16:11:39,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2300 transitions. [2021-10-08 16:11:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-08 16:11:39,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:39,239 INFO L512 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1] [2021-10-08 16:11:39,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:39,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-08 16:11:39,447 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:11:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1100104431, now seen corresponding path program 116 times [2021-10-08 16:11:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:39,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987008930] [2021-10-08 16:11:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:39,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:45,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:45,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987008930] [2021-10-08 16:11:45,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987008930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:45,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650484566] [2021-10-08 16:11:45,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:11:45,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:45,305 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:45,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-08 16:11:47,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:11:47,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:47,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 119 conjunts are in the unsatisfiable core [2021-10-08 16:11:47,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650484566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:47,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2021-10-08 16:11:47,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261555323] [2021-10-08 16:11:47,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-10-08 16:11:47,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-10-08 16:11:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-08 16:11:47,885 INFO L87 Difference]: Start difference. First operand 972 states and 2300 transitions. Second operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:53,453 INFO L93 Difference]: Finished difference Result 1918 states and 4539 transitions. [2021-10-08 16:11:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-10-08 16:11:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-08 16:11:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:53,456 INFO L225 Difference]: With dead ends: 1918 [2021-10-08 16:11:53,456 INFO L226 Difference]: Without dead ends: 1444 [2021-10-08 16:11:53,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5581.5ms TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-08 16:11:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-10-08 16:11:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 980. [2021-10-08 16:11:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 977 states have (on average 2.3735926305015353) internal successors, (2319), 979 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 2319 transitions. [2021-10-08 16:11:53,476 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 2319 transitions. Word has length 120 [2021-10-08 16:11:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:53,476 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 2319 transitions. [2021-10-08 16:11:53,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 2319 transitions. [2021-10-08 16:11:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-08 16:11:53,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:53,478 INFO L512 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1] [2021-10-08 16:11:53,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:53,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-08 16:11:53,684 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:11:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash -256498410, now seen corresponding path program 117 times [2021-10-08 16:11:53,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:53,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629372964] [2021-10-08 16:11:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:53,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:59,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:59,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629372964] [2021-10-08 16:11:59,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629372964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:59,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531601248] [2021-10-08 16:11:59,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:11:59,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:59,682 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:59,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-08 16:12:02,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-10-08 16:12:02,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:02,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 120 conjunts are in the unsatisfiable core [2021-10-08 16:12:02,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:02,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531601248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:02,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:02,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2021-10-08 16:12:02,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122364091] [2021-10-08 16:12:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-10-08 16:12:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-10-08 16:12:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-08 16:12:02,409 INFO L87 Difference]: Start difference. First operand 980 states and 2319 transitions. Second operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:07,855 INFO L93 Difference]: Finished difference Result 1934 states and 4577 transitions. [2021-10-08 16:12:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-10-08 16:12:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-08 16:12:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:07,858 INFO L225 Difference]: With dead ends: 1934 [2021-10-08 16:12:07,858 INFO L226 Difference]: Without dead ends: 1456 [2021-10-08 16:12:07,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5716.4ms TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-08 16:12:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-10-08 16:12:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 988. [2021-10-08 16:12:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 985 states have (on average 2.3736040609137055) internal successors, (2338), 987 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2338 transitions. [2021-10-08 16:12:07,873 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2338 transitions. Word has length 121 [2021-10-08 16:12:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:07,873 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2338 transitions. [2021-10-08 16:12:07,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2338 transitions. [2021-10-08 16:12:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-08 16:12:07,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:07,875 INFO L512 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1] [2021-10-08 16:12:07,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-10-08 16:12:08,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:08,076 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:12:08,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 638486479, now seen corresponding path program 118 times [2021-10-08 16:12:08,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:08,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910108031] [2021-10-08 16:12:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:08,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:14,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:14,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910108031] [2021-10-08 16:12:14,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910108031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:14,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726418939] [2021-10-08 16:12:14,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:12:14,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:14,198 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:14,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-08 16:12:16,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:12:16,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:16,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-08 16:12:16,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726418939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:16,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2021-10-08 16:12:16,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683517346] [2021-10-08 16:12:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-10-08 16:12:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-10-08 16:12:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-08 16:12:16,800 INFO L87 Difference]: Start difference. First operand 988 states and 2338 transitions. Second operand has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:22,470 INFO L93 Difference]: Finished difference Result 1950 states and 4615 transitions. [2021-10-08 16:12:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-10-08 16:12:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-08 16:12:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:22,473 INFO L225 Difference]: With dead ends: 1950 [2021-10-08 16:12:22,473 INFO L226 Difference]: Without dead ends: 1468 [2021-10-08 16:12:22,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5843.5ms TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-08 16:12:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-10-08 16:12:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 996. [2021-10-08 16:12:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 993 states have (on average 2.3736153071500503) internal successors, (2357), 995 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2357 transitions. [2021-10-08 16:12:22,492 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2357 transitions. Word has length 122 [2021-10-08 16:12:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:22,492 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2357 transitions. [2021-10-08 16:12:22,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2357 transitions. [2021-10-08 16:12:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-08 16:12:22,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:22,494 INFO L512 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1] [2021-10-08 16:12:22,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-10-08 16:12:22,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-08 16:12:22,695 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:12:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:22,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1681753034, now seen corresponding path program 119 times [2021-10-08 16:12:22,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:22,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708969932] [2021-10-08 16:12:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:22,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:29,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:29,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708969932] [2021-10-08 16:12:29,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708969932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:29,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918721499] [2021-10-08 16:12:29,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:12:29,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:29,074 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:29,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-08 16:12:31,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2021-10-08 16:12:31,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:31,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 122 conjunts are in the unsatisfiable core [2021-10-08 16:12:31,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:31,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918721499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:31,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:31,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2021-10-08 16:12:31,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721124953] [2021-10-08 16:12:31,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-10-08 16:12:31,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:31,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-10-08 16:12:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-08 16:12:31,946 INFO L87 Difference]: Start difference. First operand 996 states and 2357 transitions. Second operand has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:38,084 INFO L93 Difference]: Finished difference Result 1966 states and 4653 transitions. [2021-10-08 16:12:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-10-08 16:12:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-10-08 16:12:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:38,089 INFO L225 Difference]: With dead ends: 1966 [2021-10-08 16:12:38,089 INFO L226 Difference]: Without dead ends: 1480 [2021-10-08 16:12:38,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6093.8ms TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-08 16:12:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-10-08 16:12:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1004. [2021-10-08 16:12:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1001 states have (on average 2.3736263736263736) internal successors, (2376), 1003 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2376 transitions. [2021-10-08 16:12:38,143 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2376 transitions. Word has length 123 [2021-10-08 16:12:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:38,143 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2376 transitions. [2021-10-08 16:12:38,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2376 transitions. [2021-10-08 16:12:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-08 16:12:38,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:38,146 INFO L512 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1] [2021-10-08 16:12:38,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-10-08 16:12:38,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:38,360 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:12:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:38,361 INFO L82 PathProgramCache]: Analyzing trace with hash -594733905, now seen corresponding path program 120 times [2021-10-08 16:12:38,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:38,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723400709] [2021-10-08 16:12:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:38,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:45,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:45,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723400709] [2021-10-08 16:12:45,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723400709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:45,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558288580] [2021-10-08 16:12:45,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:12:45,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:45,015 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:45,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-08 16:12:47,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-10-08 16:12:47,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:47,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-08 16:12:47,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558288580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:48,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:48,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2021-10-08 16:12:48,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851389643] [2021-10-08 16:12:48,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-08 16:12:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-08 16:12:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-08 16:12:48,004 INFO L87 Difference]: Start difference. First operand 1004 states and 2376 transitions. Second operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:53,881 INFO L93 Difference]: Finished difference Result 1982 states and 4691 transitions. [2021-10-08 16:12:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-08 16:12:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-10-08 16:12:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:53,884 INFO L225 Difference]: With dead ends: 1982 [2021-10-08 16:12:53,884 INFO L226 Difference]: Without dead ends: 1492 [2021-10-08 16:12:53,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6351.7ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-08 16:12:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-10-08 16:12:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1012. [2021-10-08 16:12:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1009 states have (on average 2.3736372646184343) internal successors, (2395), 1011 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2395 transitions. [2021-10-08 16:12:53,898 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2395 transitions. Word has length 124 [2021-10-08 16:12:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:53,898 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2395 transitions. [2021-10-08 16:12:53,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2395 transitions. [2021-10-08 16:12:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-08 16:12:53,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:53,900 INFO L512 BasicCegarLoop]: trace histogram [121, 1, 1, 1, 1] [2021-10-08 16:12:53,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:54,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:54,105 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:12:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:54,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1256879274, now seen corresponding path program 121 times [2021-10-08 16:12:54,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:54,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735527290] [2021-10-08 16:12:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:54,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:00,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:00,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735527290] [2021-10-08 16:13:00,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735527290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:00,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797648065] [2021-10-08 16:13:00,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:13:00,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:00,776 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:00,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-08 16:13:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:03,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 124 conjunts are in the unsatisfiable core [2021-10-08 16:13:03,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:03,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797648065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:03,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:03,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2021-10-08 16:13:03,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652276859] [2021-10-08 16:13:03,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-10-08 16:13:03,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-10-08 16:13:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-08 16:13:03,651 INFO L87 Difference]: Start difference. First operand 1012 states and 2395 transitions. Second operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:10,284 INFO L93 Difference]: Finished difference Result 1998 states and 4729 transitions. [2021-10-08 16:13:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-08 16:13:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-08 16:13:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:10,287 INFO L225 Difference]: With dead ends: 1998 [2021-10-08 16:13:10,287 INFO L226 Difference]: Without dead ends: 1504 [2021-10-08 16:13:10,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6354.1ms TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-08 16:13:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-10-08 16:13:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1020. [2021-10-08 16:13:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1017 states have (on average 2.3736479842674534) internal successors, (2414), 1019 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2414 transitions. [2021-10-08 16:13:10,301 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2414 transitions. Word has length 125 [2021-10-08 16:13:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:10,301 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2414 transitions. [2021-10-08 16:13:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2414 transitions. [2021-10-08 16:13:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-08 16:13:10,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:10,303 INFO L512 BasicCegarLoop]: trace histogram [122, 1, 1, 1, 1] [2021-10-08 16:13:10,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:10,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:10,504 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -308549233, now seen corresponding path program 122 times [2021-10-08 16:13:10,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:10,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618619100] [2021-10-08 16:13:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:10,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:17,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:17,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618619100] [2021-10-08 16:13:17,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618619100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:17,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16540683] [2021-10-08 16:13:17,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:17,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:17,302 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:17,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-08 16:13:19,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:19,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:19,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 125 conjunts are in the unsatisfiable core [2021-10-08 16:13:19,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:20,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16540683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:20,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:20,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2021-10-08 16:13:20,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691697286] [2021-10-08 16:13:20,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-10-08 16:13:20,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-10-08 16:13:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-08 16:13:20,165 INFO L87 Difference]: Start difference. First operand 1020 states and 2414 transitions. Second operand has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:26,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:26,958 INFO L93 Difference]: Finished difference Result 2014 states and 4767 transitions. [2021-10-08 16:13:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-10-08 16:13:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-10-08 16:13:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:26,961 INFO L225 Difference]: With dead ends: 2014 [2021-10-08 16:13:26,961 INFO L226 Difference]: Without dead ends: 1516 [2021-10-08 16:13:26,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6468.2ms TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-08 16:13:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-08 16:13:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1028. [2021-10-08 16:13:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1025 states have (on average 2.3736585365853657) internal successors, (2433), 1027 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:26,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 2433 transitions. [2021-10-08 16:13:26,976 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 2433 transitions. Word has length 126 [2021-10-08 16:13:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:26,976 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 2433 transitions. [2021-10-08 16:13:26,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 2433 transitions. [2021-10-08 16:13:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-08 16:13:26,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:26,977 INFO L512 BasicCegarLoop]: trace histogram [123, 1, 1, 1, 1] [2021-10-08 16:13:27,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-08 16:13:27,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-08 16:13:27,178 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash -975089034, now seen corresponding path program 123 times [2021-10-08 16:13:27,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:27,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461863313] [2021-10-08 16:13:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:27,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:34,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:34,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461863313] [2021-10-08 16:13:34,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461863313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:34,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325588236] [2021-10-08 16:13:34,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:34,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:34,022 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:34,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-08 16:13:36,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-08 16:13:36,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:36,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 126 conjunts are in the unsatisfiable core [2021-10-08 16:13:36,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:37,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325588236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:37,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:37,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2021-10-08 16:13:37,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162606181] [2021-10-08 16:13:37,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-10-08 16:13:37,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-10-08 16:13:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-08 16:13:37,219 INFO L87 Difference]: Start difference. First operand 1028 states and 2433 transitions. Second operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:44,232 INFO L93 Difference]: Finished difference Result 2030 states and 4805 transitions. [2021-10-08 16:13:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-10-08 16:13:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-08 16:13:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:44,235 INFO L225 Difference]: With dead ends: 2030 [2021-10-08 16:13:44,235 INFO L226 Difference]: Without dead ends: 1528 [2021-10-08 16:13:44,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6534.3ms TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-08 16:13:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-08 16:13:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1036. [2021-10-08 16:13:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1033 states have (on average 2.3736689254598256) internal successors, (2452), 1035 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2452 transitions. [2021-10-08 16:13:44,251 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2452 transitions. Word has length 127 [2021-10-08 16:13:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:44,251 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2452 transitions. [2021-10-08 16:13:44,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2452 transitions. [2021-10-08 16:13:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-08 16:13:44,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:44,253 INFO L512 BasicCegarLoop]: trace histogram [124, 1, 1, 1, 1] [2021-10-08 16:13:44,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:44,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:44,454 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash -162986385, now seen corresponding path program 124 times [2021-10-08 16:13:44,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:44,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870580241] [2021-10-08 16:13:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:44,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:51,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:51,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870580241] [2021-10-08 16:13:51,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870580241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:51,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267551092] [2021-10-08 16:13:51,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:13:51,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:51,231 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:51,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-08 16:13:53,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:13:53,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:53,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 127 conjunts are in the unsatisfiable core [2021-10-08 16:13:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:54,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267551092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:54,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:54,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2021-10-08 16:13:54,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770726693] [2021-10-08 16:13:54,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-10-08 16:13:54,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-10-08 16:13:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-08 16:13:54,121 INFO L87 Difference]: Start difference. First operand 1036 states and 2452 transitions. Second operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:00,518 INFO L93 Difference]: Finished difference Result 2046 states and 4843 transitions. [2021-10-08 16:14:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-10-08 16:14:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-10-08 16:14:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:00,521 INFO L225 Difference]: With dead ends: 2046 [2021-10-08 16:14:00,521 INFO L226 Difference]: Without dead ends: 1540 [2021-10-08 16:14:00,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6491.3ms TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-08 16:14:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-10-08 16:14:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1044. [2021-10-08 16:14:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1041 states have (on average 2.3736791546589817) internal successors, (2471), 1043 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2471 transitions. [2021-10-08 16:14:00,545 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2471 transitions. Word has length 128 [2021-10-08 16:14:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:00,545 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 2471 transitions. [2021-10-08 16:14:00,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2471 transitions. [2021-10-08 16:14:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-08 16:14:00,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:00,547 INFO L512 BasicCegarLoop]: trace histogram [125, 1, 1, 1, 1] [2021-10-08 16:14:00,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2021-10-08 16:14:00,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-08 16:14:00,761 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:00,762 INFO L82 PathProgramCache]: Analyzing trace with hash -757608042, now seen corresponding path program 125 times [2021-10-08 16:14:00,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:00,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452210808] [2021-10-08 16:14:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:00,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:08,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:08,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452210808] [2021-10-08 16:14:08,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452210808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:08,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233356985] [2021-10-08 16:14:08,500 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:08,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:08,501 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:08,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-08 16:14:11,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-08 16:14:11,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:11,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 128 conjunts are in the unsatisfiable core [2021-10-08 16:14:11,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:11,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233356985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:11,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:11,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2021-10-08 16:14:11,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292828580] [2021-10-08 16:14:11,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-08 16:14:11,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-08 16:14:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-08 16:14:11,646 INFO L87 Difference]: Start difference. First operand 1044 states and 2471 transitions. Second operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:18,582 INFO L93 Difference]: Finished difference Result 2062 states and 4881 transitions. [2021-10-08 16:14:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-08 16:14:18,583 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-08 16:14:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:18,586 INFO L225 Difference]: With dead ends: 2062 [2021-10-08 16:14:18,586 INFO L226 Difference]: Without dead ends: 1552 [2021-10-08 16:14:18,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7412.9ms TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-08 16:14:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-10-08 16:14:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1052. [2021-10-08 16:14:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1049 states have (on average 2.373689227836034) internal successors, (2490), 1051 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2490 transitions. [2021-10-08 16:14:18,603 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2490 transitions. Word has length 129 [2021-10-08 16:14:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:18,603 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2490 transitions. [2021-10-08 16:14:18,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2490 transitions. [2021-10-08 16:14:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-08 16:14:18,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:18,605 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1] [2021-10-08 16:14:18,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:18,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-08 16:14:18,806 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2011010225, now seen corresponding path program 126 times [2021-10-08 16:14:18,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:18,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420549201] [2021-10-08 16:14:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:18,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:26,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:26,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420549201] [2021-10-08 16:14:26,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420549201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:26,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295044469] [2021-10-08 16:14:26,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:26,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:26,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:26,651 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:26,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-08 16:14:29,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-10-08 16:14:29,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:29,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 129 conjunts are in the unsatisfiable core [2021-10-08 16:14:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:29,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295044469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:29,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:29,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2021-10-08 16:14:29,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503579356] [2021-10-08 16:14:29,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-10-08 16:14:29,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-10-08 16:14:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-08 16:14:29,891 INFO L87 Difference]: Start difference. First operand 1052 states and 2490 transitions. Second operand has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:36,971 INFO L93 Difference]: Finished difference Result 2078 states and 4919 transitions. [2021-10-08 16:14:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-08 16:14:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-10-08 16:14:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:36,975 INFO L225 Difference]: With dead ends: 2078 [2021-10-08 16:14:36,975 INFO L226 Difference]: Without dead ends: 1564 [2021-10-08 16:14:36,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7530.3ms TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-08 16:14:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2021-10-08 16:14:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1060. [2021-10-08 16:14:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1057 states have (on average 2.3736991485335857) internal successors, (2509), 1059 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2509 transitions. [2021-10-08 16:14:36,993 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2509 transitions. Word has length 130 [2021-10-08 16:14:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:36,993 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2509 transitions. [2021-10-08 16:14:36,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2509 transitions. [2021-10-08 16:14:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-08 16:14:36,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:36,996 INFO L512 BasicCegarLoop]: trace histogram [127, 1, 1, 1, 1] [2021-10-08 16:14:37,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:37,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:37,196 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2083195062, now seen corresponding path program 127 times [2021-10-08 16:14:37,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:37,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714402419] [2021-10-08 16:14:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:37,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:45,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:45,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714402419] [2021-10-08 16:14:45,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714402419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339734894] [2021-10-08 16:14:45,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:45,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:45,111 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:45,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-08 16:14:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:47,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 130 conjunts are in the unsatisfiable core [2021-10-08 16:14:47,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:48,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339734894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:48,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:48,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2021-10-08 16:14:48,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922619519] [2021-10-08 16:14:48,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-10-08 16:14:48,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-10-08 16:14:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-08 16:14:48,145 INFO L87 Difference]: Start difference. First operand 1060 states and 2509 transitions. Second operand has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:55,536 INFO L93 Difference]: Finished difference Result 2094 states and 4957 transitions. [2021-10-08 16:14:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-10-08 16:14:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-10-08 16:14:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:55,539 INFO L225 Difference]: With dead ends: 2094 [2021-10-08 16:14:55,539 INFO L226 Difference]: Without dead ends: 1576 [2021-10-08 16:14:55,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7576.0ms TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-08 16:14:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-08 16:14:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1068. [2021-10-08 16:14:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1065 states have (on average 2.3737089201877932) internal successors, (2528), 1067 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2528 transitions. [2021-10-08 16:14:55,553 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2528 transitions. Word has length 131 [2021-10-08 16:14:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:55,553 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2528 transitions. [2021-10-08 16:14:55,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2528 transitions. [2021-10-08 16:14:55,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-08 16:14:55,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:55,555 INFO L512 BasicCegarLoop]: trace histogram [128, 1, 1, 1, 1] [2021-10-08 16:14:55,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2021-10-08 16:14:55,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-10-08 16:14:55,763 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:55,764 INFO L82 PathProgramCache]: Analyzing trace with hash 154540079, now seen corresponding path program 128 times [2021-10-08 16:14:55,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:55,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990441859] [2021-10-08 16:14:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:55,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:03,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:03,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990441859] [2021-10-08 16:15:03,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990441859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:03,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129798268] [2021-10-08 16:15:03,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:03,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:03,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:03,921 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:03,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-08 16:15:06,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:06,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:06,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 131 conjunts are in the unsatisfiable core [2021-10-08 16:15:06,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:06,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129798268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:06,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:06,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2021-10-08 16:15:06,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423202085] [2021-10-08 16:15:06,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-10-08 16:15:06,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:06,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-10-08 16:15:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2021-10-08 16:15:06,999 INFO L87 Difference]: Start difference. First operand 1068 states and 2528 transitions. Second operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-08 16:15:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:15:07,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:07,964 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:15:07,964 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:15:07,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2021-10-08 16:15:08,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-08 16:15:08,159 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). [2021-10-08 16:15:08,161 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,164 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,164 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,164 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,164 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:15:08,171 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:15:08,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:15:08,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:15:08 BasicIcfg [2021-10-08 16:15:08,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:15:08,174 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:15:08,176 INFO L168 Benchmark]: Toolchain (without parser) took 742091.97 ms. Allocated memory was 166.7 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 141.7 MB in the beginning and 647.9 MB in the end (delta: -506.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,176 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 166.7 MB. Free memory is still 147.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:15:08,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.47 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 130.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 166.7 MB. Free memory was 130.7 MB in the beginning and 129.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,178 INFO L168 Benchmark]: Boogie Preprocessor took 33.07 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 127.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,179 INFO L168 Benchmark]: RCFGBuilder took 747.23 ms. Allocated memory is still 166.7 MB. Free memory was 127.9 MB in the beginning and 140.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,179 INFO L168 Benchmark]: TraceAbstraction took 740949.10 ms. Allocated memory was 166.7 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 139.9 MB in the beginning and 647.9 MB in the end (delta: -508.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2021-10-08 16:15:08,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 166.7 MB. Free memory is still 147.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.47 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 130.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 166.7 MB. Free memory was 130.7 MB in the beginning and 129.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.07 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 127.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 747.23 ms. Allocated memory is still 166.7 MB. Free memory was 127.9 MB in the beginning and 140.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 740949.10 ms. Allocated memory was 166.7 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 139.9 MB in the beginning and 647.9 MB in the end (delta: -508.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4029.2ms, 97 PlacesBefore, 32 PlacesAfterwards, 96 TransitionsBefore, 27 TransitionsAfterwards, 992 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 96 TotalNumberOfCompositions, 1312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1268, positive: 1259, positive conditional: 0, positive unconditional: 1259, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 668, positive: 663, positive conditional: 0, positive unconditional: 663, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 668, positive: 661, positive conditional: 0, positive unconditional: 661, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 25, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1268, positive: 596, positive conditional: 0, positive unconditional: 596, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 668, unknown conditional: 0, unknown unconditional: 668] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1068states) and FLOYD_HOARE automaton (currently 27 states, 131 states before enhancement),while ReachableStatesComputation was computing reachable states (185 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 740762.7ms, OverallIterations: 140, TraceHistogramMax: 128, EmptinessCheckTime: 176.8ms, AutomataDifference: 232136.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4099.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26199 SDtfs, 184733 SDslu, 142648 SDs, 0 SdLazy, 18202 SolverSat, 32469 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22100.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17084 GetRequests, 8676 SyntacticMatches, 0 SemanticMatches, 8408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 299890.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=139, InterpolantAutomatonStates: 8550, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1732.1ms AutomataMinimizationTime, 139 MinimizatonAttempts, 33738 StatesRemovedByMinimization, 136 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2490.6ms SsaConstructionTime, 17907.8ms SatisfiabilityAnalysisTime, 338529.1ms InterpolantComputationTime, 17668 NumberOfCodeBlocks, 17662 NumberOfCodeBlocksAsserted, 2374 NumberOfCheckSat, 17395 ConstructedInterpolants, 0 QuantifiedInterpolants, 52139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 81997 ConjunctsInSsa, 8660 ConjunctsInUnsatCore, 273 InterpolantComputations, 10 PerfectInterpolantSequences, 17/715548 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown