/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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:14:15,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:14:15,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:14:15,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:14:15,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:14:15,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:14:15,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:14:15,925 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 16:14:15,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:14:15,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:14:15,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:14:15,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:14:15,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:14:15,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:14:15,958 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:14:15,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:14:15,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:14:15,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:14:15,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:14:15,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:14:15,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:14:15,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:14:15,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:14:15,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:14:15,962 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:14:15,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:14:15,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:14:15,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:14:15,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:14:15,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:14:15,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:14:15,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:14:15,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:14:15,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:14:15,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:14:15,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:14:15,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:14:15,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:14:15,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:14:15,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:14:15,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:14:16,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:14:16,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:14:16,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:14:16,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:14:16,422 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:14:16,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 16:14:16,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f288de7/b53a3ea720b8477db1c56a039a1dadf4/FLAGb5ab61b35 [2021-10-08 16:14:17,261 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:14:17,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 16:14:17,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f288de7/b53a3ea720b8477db1c56a039a1dadf4/FLAGb5ab61b35 [2021-10-08 16:14:17,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f288de7/b53a3ea720b8477db1c56a039a1dadf4 [2021-10-08 16:14:17,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:14:17,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:14:17,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:14:17,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:14:17,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:14:17,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:17,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c355d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17, skipping insertion in model container [2021-10-08 16:14:17,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:17,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:14:17,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:14:17,854 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-proofs-counter-add-4-semi-Q67.wvr.c[2597,2610] [2021-10-08 16:14:17,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:14:17,867 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:14:17,896 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-proofs-counter-add-4-semi-Q67.wvr.c[2597,2610] [2021-10-08 16:14:17,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:14:17,923 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:14:17,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17 WrapperNode [2021-10-08 16:14:17,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:14:17,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:14:17,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:14:17,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:14:17,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:17,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:14:18,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:14:18,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:14:18,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:14:18,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:14:18,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:14:18,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:14:18,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:14:18,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (1/1) ... [2021-10-08 16:14:18,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:14:18,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:18,139 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 16:14:18,160 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 16:14:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:14:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:14:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:14:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:14:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:14:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:14:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 16:14:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 16:14:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:14:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:14:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:14:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:14:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:14:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:14:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:14:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:14:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:14:18,238 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 16:14:19,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:14:19,259 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-08 16:14:19,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:14:19 BoogieIcfgContainer [2021-10-08 16:14:19,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:14:19,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:14:19,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:14:19,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:14:19,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:14:17" (1/3) ... [2021-10-08 16:14:19,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d1034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:14:19, skipping insertion in model container [2021-10-08 16:14:19,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:14:17" (2/3) ... [2021-10-08 16:14:19,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d1034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:14:19, skipping insertion in model container [2021-10-08 16:14:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:14:19" (3/3) ... [2021-10-08 16:14:19,285 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 16:14:19,291 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:14:19,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:14:19,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-08 16:14:19,292 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:14:19,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,336 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,336 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,344 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,345 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,345 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,346 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,354 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,354 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,354 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,354 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,354 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,355 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,355 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,356 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,356 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,357 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,358 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,358 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,363 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,367 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,368 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,369 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,370 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,370 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,370 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,370 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,371 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,372 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,372 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,372 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,372 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,372 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,373 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,373 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,373 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,386 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,391 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,397 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:14:19,417 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 16:14:19,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:14:19,496 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 16:14:19,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-08 16:14:19,515 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:14:19,529 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-08 16:14:19,532 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-08 16:14:19,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 138 transitions, 308 flow [2021-10-08 16:14:19,597 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-10-08 16:14:19,597 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 16:14:19,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 10/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-08 16:14:19,608 INFO L116 LiptonReduction]: Number of co-enabled transitions 2520 [2021-10-08 16:14:26,215 INFO L131 LiptonReduction]: Checked pairs total: 3550 [2021-10-08 16:14:26,216 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-08 16:14:26,231 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2021-10-08 16:14:26,412 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:14:26,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:26,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:14:26,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 639337, now seen corresponding path program 1 times [2021-10-08 16:14:26,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:26,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113734716] [2021-10-08 16:14:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:26,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:26,720 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 16:14:26,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:26,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113734716] [2021-10-08 16:14:26,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113734716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:26,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:26,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:26,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532377736] [2021-10-08 16:14:26,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:26,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:26,771 INFO L87 Difference]: Start difference. First operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:26,937 INFO L93 Difference]: Finished difference Result 4446 states and 18988 transitions. [2021-10-08 16:14:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-08 16:14:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:27,026 INFO L225 Difference]: With dead ends: 4446 [2021-10-08 16:14:27,026 INFO L226 Difference]: Without dead ends: 4446 [2021-10-08 16:14:27,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-08 16:14:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2968. [2021-10-08 16:14:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2569 states have (on average 5.393927598287271) internal successors, (13857), 2967 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 13857 transitions. [2021-10-08 16:14:27,403 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 13857 transitions. Word has length 3 [2021-10-08 16:14:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:27,404 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 13857 transitions. [2021-10-08 16:14:27,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 13857 transitions. [2021-10-08 16:14:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:14:27,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:27,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:14:27,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:14:27,407 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash 639340, now seen corresponding path program 1 times [2021-10-08 16:14:27,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:27,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119088121] [2021-10-08 16:14:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:27,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:27,508 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 16:14:27,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:27,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119088121] [2021-10-08 16:14:27,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119088121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:27,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:27,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:27,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918928289] [2021-10-08 16:14:27,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:27,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:27,514 INFO L87 Difference]: Start difference. First operand 2968 states and 13857 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:27,635 INFO L93 Difference]: Finished difference Result 3036 states and 14102 transitions. [2021-10-08 16:14:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:27,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-08 16:14:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:27,678 INFO L225 Difference]: With dead ends: 3036 [2021-10-08 16:14:27,679 INFO L226 Difference]: Without dead ends: 3016 [2021-10-08 16:14:27,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-10-08 16:14:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-10-08 16:14:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2617 states have (on average 5.367596484524264) internal successors, (14047), 3015 states have internal predecessors, (14047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 14047 transitions. [2021-10-08 16:14:27,907 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 14047 transitions. Word has length 3 [2021-10-08 16:14:27,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:27,907 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 14047 transitions. [2021-10-08 16:14:27,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 14047 transitions. [2021-10-08 16:14:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:14:27,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:27,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:14:27,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:14:27,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:27,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:27,911 INFO L82 PathProgramCache]: Analyzing trace with hash 19819998, now seen corresponding path program 1 times [2021-10-08 16:14:27,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:27,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996183961] [2021-10-08 16:14:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:27,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:28,058 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 16:14:28,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:28,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996183961] [2021-10-08 16:14:28,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996183961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:28,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:28,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:28,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897751127] [2021-10-08 16:14:28,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:28,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:28,062 INFO L87 Difference]: Start difference. First operand 3016 states and 14047 transitions. 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 16:14:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:28,132 INFO L93 Difference]: Finished difference Result 2644 states and 12423 transitions. [2021-10-08 16:14:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:28,133 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 16:14:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:28,174 INFO L225 Difference]: With dead ends: 2644 [2021-10-08 16:14:28,175 INFO L226 Difference]: Without dead ends: 2644 [2021-10-08 16:14:28,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:14:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-10-08 16:14:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2644. [2021-10-08 16:14:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2325 states have (on average 5.3432258064516125) internal successors, (12423), 2643 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 12423 transitions. [2021-10-08 16:14:28,378 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 12423 transitions. Word has length 4 [2021-10-08 16:14:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:28,379 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 12423 transitions. [2021-10-08 16:14:28,379 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 16:14:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 12423 transitions. [2021-10-08 16:14:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:14:28,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:28,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:14:28,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:14:28,380 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash 19820000, now seen corresponding path program 1 times [2021-10-08 16:14:28,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:28,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786956541] [2021-10-08 16:14:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:28,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:28,425 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 16:14:28,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:28,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786956541] [2021-10-08 16:14:28,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786956541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:28,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730418648] [2021-10-08 16:14:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:28,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:28,428 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 16:14:28,440 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 16:14:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:28,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:28,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:28,541 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 16:14:28,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730418648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:28,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:28,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:14:28,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479353136] [2021-10-08 16:14:28,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:14:28,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:14:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:28,544 INFO L87 Difference]: Start difference. First operand 2644 states and 12423 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:14:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:28,678 INFO L93 Difference]: Finished difference Result 5936 states and 25357 transitions. [2021-10-08 16:14:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 4 [2021-10-08 16:14:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:28,872 INFO L225 Difference]: With dead ends: 5936 [2021-10-08 16:14:28,872 INFO L226 Difference]: Without dead ends: 5936 [2021-10-08 16:14:28,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:28,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-10-08 16:14:29,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 3016. [2021-10-08 16:14:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2697 states have (on average 5.621431219873934) internal successors, (15161), 3015 states have internal predecessors, (15161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 15161 transitions. [2021-10-08 16:14:29,118 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 15161 transitions. Word has length 4 [2021-10-08 16:14:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:29,184 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 15161 transitions. [2021-10-08 16:14:29,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:14:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 15161 transitions. [2021-10-08 16:14:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:14:29,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:29,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:14:29,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 16:14:29,386 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 16:14:29,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:29,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:29,387 INFO L82 PathProgramCache]: Analyzing trace with hash 19820001, now seen corresponding path program 1 times [2021-10-08 16:14:29,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:29,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292219001] [2021-10-08 16:14:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:29,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:29,427 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 16:14:29,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:29,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292219001] [2021-10-08 16:14:29,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292219001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:29,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747100740] [2021-10-08 16:14:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:29,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:29,441 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 16:14:29,458 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 16:14:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:29,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:29,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:29,528 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 16:14:29,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747100740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:29,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:29,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:14:29,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389456362] [2021-10-08 16:14:29,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:14:29,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:14:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:29,531 INFO L87 Difference]: Start difference. First operand 3016 states and 15161 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:14:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:29,714 INFO L93 Difference]: Finished difference Result 6634 states and 27180 transitions. [2021-10-08 16:14:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:14:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 4 [2021-10-08 16:14:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:29,765 INFO L225 Difference]: With dead ends: 6634 [2021-10-08 16:14:29,766 INFO L226 Difference]: Without dead ends: 6614 [2021-10-08 16:14:29,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-10-08 16:14:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 5404. [2021-10-08 16:14:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5085 states have (on average 5.107767944936087) internal successors, (25973), 5403 states have internal predecessors, (25973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 25973 transitions. [2021-10-08 16:14:30,268 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 25973 transitions. Word has length 4 [2021-10-08 16:14:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:30,268 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 25973 transitions. [2021-10-08 16:14:30,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:14:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 25973 transitions. [2021-10-08 16:14:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:14:30,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:30,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:14:30,311 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 16:14:30,473 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 16:14:30,474 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:30,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash 19820002, now seen corresponding path program 1 times [2021-10-08 16:14:30,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:30,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591394051] [2021-10-08 16:14:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:30,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:30,543 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 16:14:30,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:30,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591394051] [2021-10-08 16:14:30,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591394051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:30,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697988659] [2021-10-08 16:14:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:30,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:30,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:30,551 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 16:14:30,567 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 16:14:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:30,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:30,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:30,625 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 16:14:30,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697988659] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:30,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:30,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 16:14:30,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825029397] [2021-10-08 16:14:30,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:30,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:30,628 INFO L87 Difference]: Start difference. First operand 5404 states and 25973 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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 16:14:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:30,758 INFO L93 Difference]: Finished difference Result 5772 states and 27809 transitions. [2021-10-08 16:14:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 16:14:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:30,810 INFO L225 Difference]: With dead ends: 5772 [2021-10-08 16:14:30,811 INFO L226 Difference]: Without dead ends: 5772 [2021-10-08 16:14:30,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2021-10-08 16:14:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 3768. [2021-10-08 16:14:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3577 states have (on average 4.98909700866648) internal successors, (17846), 3767 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 17846 transitions. [2021-10-08 16:14:31,334 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 17846 transitions. Word has length 4 [2021-10-08 16:14:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:31,335 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 17846 transitions. [2021-10-08 16:14:31,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 16:14:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 17846 transitions. [2021-10-08 16:14:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:14:31,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:31,336 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:14:31,373 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 16:14:31,550 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 16:14:31,551 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 614420491, now seen corresponding path program 2 times [2021-10-08 16:14:31,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:31,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672714564] [2021-10-08 16:14:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:31,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:31,625 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 16:14:31,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:31,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672714564] [2021-10-08 16:14:31,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672714564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:31,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322665952] [2021-10-08 16:14:31,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:31,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:31,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:31,629 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 16:14:31,640 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 16:14:31,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:31,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:31,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:14:31,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:31,745 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 16:14:31,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322665952] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:31,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:31,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:31,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101565625] [2021-10-08 16:14:31,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:31,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:31,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:31,749 INFO L87 Difference]: Start difference. First operand 3768 states and 17846 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 16:14:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:31,906 INFO L93 Difference]: Finished difference Result 3228 states and 15307 transitions. [2021-10-08 16:14:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:31,907 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 5 [2021-10-08 16:14:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:31,956 INFO L225 Difference]: With dead ends: 3228 [2021-10-08 16:14:31,956 INFO L226 Difference]: Without dead ends: 3228 [2021-10-08 16:14:31,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-08 16:14:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 1972. [2021-10-08 16:14:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1845 states have (on average 4.555555555555555) internal successors, (8405), 1971 states have internal predecessors, (8405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 8405 transitions. [2021-10-08 16:14:32,099 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 8405 transitions. Word has length 5 [2021-10-08 16:14:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:32,100 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 8405 transitions. [2021-10-08 16:14:32,100 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 16:14:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 8405 transitions. [2021-10-08 16:14:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:14:32,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:32,101 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:14:32,140 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 16:14:32,314 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 16:14:32,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 614420492, now seen corresponding path program 2 times [2021-10-08 16:14:32,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:32,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389299980] [2021-10-08 16:14:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:32,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:32,352 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 16:14:32,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:32,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389299980] [2021-10-08 16:14:32,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389299980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:32,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305324205] [2021-10-08 16:14:32,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:32,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:32,359 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 16:14:32,368 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 16:14:32,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:32,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:32,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:14:32,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:32,446 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 16:14:32,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305324205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:32,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:32,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 16:14:32,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800199090] [2021-10-08 16:14:32,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:14:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:14:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:32,449 INFO L87 Difference]: Start difference. First operand 1972 states and 8405 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 16:14:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:32,565 INFO L93 Difference]: Finished difference Result 3464 states and 13906 transitions. [2021-10-08 16:14:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:14:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 5 [2021-10-08 16:14:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:32,589 INFO L225 Difference]: With dead ends: 3464 [2021-10-08 16:14:32,589 INFO L226 Difference]: Without dead ends: 3444 [2021-10-08 16:14:32,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-10-08 16:14:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2348. [2021-10-08 16:14:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2221 states have (on average 4.668167492120666) internal successors, (10368), 2347 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 10368 transitions. [2021-10-08 16:14:32,750 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 10368 transitions. Word has length 5 [2021-10-08 16:14:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:32,750 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 10368 transitions. [2021-10-08 16:14:32,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 16:14:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 10368 transitions. [2021-10-08 16:14:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:14:32,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:32,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:14:32,786 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 16:14:32,967 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 16:14:32,968 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1869484483, now seen corresponding path program 1 times [2021-10-08 16:14:32,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:32,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853289959] [2021-10-08 16:14:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:32,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:32,995 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 16:14:32,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:32,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853289959] [2021-10-08 16:14:32,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853289959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:32,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:32,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:32,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138082966] [2021-10-08 16:14:32,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:32,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:32,998 INFO L87 Difference]: Start difference. First operand 2348 states and 10368 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 16:14:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:33,042 INFO L93 Difference]: Finished difference Result 3708 states and 16218 transitions. [2021-10-08 16:14:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 16:14:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:33,065 INFO L225 Difference]: With dead ends: 3708 [2021-10-08 16:14:33,065 INFO L226 Difference]: Without dead ends: 3704 [2021-10-08 16:14:33,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:14:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-10-08 16:14:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 2870. [2021-10-08 16:14:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2743 states have (on average 4.852351440029165) internal successors, (13310), 2869 states have internal predecessors, (13310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 13310 transitions. [2021-10-08 16:14:33,181 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 13310 transitions. Word has length 6 [2021-10-08 16:14:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:33,182 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 13310 transitions. [2021-10-08 16:14:33,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 16:14:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 13310 transitions. [2021-10-08 16:14:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:14:33,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:33,183 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-08 16:14:33,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:14:33,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:33,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1867166529, now seen corresponding path program 3 times [2021-10-08 16:14:33,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:33,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086518897] [2021-10-08 16:14:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:33,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:33,223 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 16:14:33,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:33,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086518897] [2021-10-08 16:14:33,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086518897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:33,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415604120] [2021-10-08 16:14:33,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:33,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:33,226 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 16:14:33,228 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 16:14:33,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:14:33,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:33,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:14:33,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:33,340 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 16:14:33,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415604120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:33,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:33,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 16:14:33,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685335271] [2021-10-08 16:14:33,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:14:33,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:14:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:14:33,342 INFO L87 Difference]: Start difference. First operand 2870 states and 13310 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 16:14:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:33,485 INFO L93 Difference]: Finished difference Result 5262 states and 22824 transitions. [2021-10-08 16:14:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:33,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 6 [2021-10-08 16:14:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:33,520 INFO L225 Difference]: With dead ends: 5262 [2021-10-08 16:14:33,520 INFO L226 Difference]: Without dead ends: 5230 [2021-10-08 16:14:33,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:14:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2021-10-08 16:14:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 3362. [2021-10-08 16:14:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3235 states have (on average 4.907882534775888) internal successors, (15877), 3361 states have internal predecessors, (15877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 15877 transitions. [2021-10-08 16:14:33,688 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 15877 transitions. Word has length 6 [2021-10-08 16:14:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:33,688 INFO L470 AbstractCegarLoop]: Abstraction has 3362 states and 15877 transitions. [2021-10-08 16:14:33,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 16:14:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 15877 transitions. [2021-10-08 16:14:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:33,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:33,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:33,729 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 16:14:33,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-08 16:14:33,905 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510105, now seen corresponding path program 1 times [2021-10-08 16:14:33,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:33,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849625093] [2021-10-08 16:14:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:33,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:33,930 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 16:14:33,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:33,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849625093] [2021-10-08 16:14:33,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849625093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:33,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:33,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:33,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724526518] [2021-10-08 16:14:33,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:33,932 INFO L87 Difference]: Start difference. First operand 3362 states and 15877 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:33,962 INFO L93 Difference]: Finished difference Result 2672 states and 12337 transitions. [2021-10-08 16:14:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:33,979 INFO L225 Difference]: With dead ends: 2672 [2021-10-08 16:14:33,979 INFO L226 Difference]: Without dead ends: 2672 [2021-10-08 16:14:33,980 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 16:14:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-10-08 16:14:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2021-10-08 16:14:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2577 states have (on average 4.787349631354288) internal successors, (12337), 2671 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 12337 transitions. [2021-10-08 16:14:34,104 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 12337 transitions. Word has length 7 [2021-10-08 16:14:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:34,104 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 12337 transitions. [2021-10-08 16:14:34,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 12337 transitions. [2021-10-08 16:14:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:34,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:34,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:14:34,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510107, now seen corresponding path program 1 times [2021-10-08 16:14:34,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:34,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064849884] [2021-10-08 16:14:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:34,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:34,131 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 16:14:34,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:34,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064849884] [2021-10-08 16:14:34,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064849884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:34,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:34,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:34,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83536788] [2021-10-08 16:14:34,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:34,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:34,134 INFO L87 Difference]: Start difference. First operand 2672 states and 12337 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:34,200 INFO L93 Difference]: Finished difference Result 4504 states and 20684 transitions. [2021-10-08 16:14:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:34,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:34,238 INFO L225 Difference]: With dead ends: 4504 [2021-10-08 16:14:34,238 INFO L226 Difference]: Without dead ends: 4504 [2021-10-08 16:14:34,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2021-10-08 16:14:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3542. [2021-10-08 16:14:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3447 states have (on average 4.965767333913548) internal successors, (17117), 3541 states have internal predecessors, (17117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 17117 transitions. [2021-10-08 16:14:34,432 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 17117 transitions. Word has length 7 [2021-10-08 16:14:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:34,433 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 17117 transitions. [2021-10-08 16:14:34,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 17117 transitions. [2021-10-08 16:14:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:34,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:34,434 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2021-10-08 16:14:34,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 16:14:34,435 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2047588012, now seen corresponding path program 4 times [2021-10-08 16:14:34,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:34,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250091422] [2021-10-08 16:14:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:34,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:34,479 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 16:14:34,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:34,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250091422] [2021-10-08 16:14:34,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250091422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:34,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821180557] [2021-10-08 16:14:34,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:34,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:34,482 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 16:14:34,493 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 16:14:34,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:34,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:34,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:14:34,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:34,588 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 16:14:34,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821180557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:34,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:34,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-08 16:14:34,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763781491] [2021-10-08 16:14:34,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:14:34,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:34,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:14:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:14:34,591 INFO L87 Difference]: Start difference. First operand 3542 states and 17117 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 16:14:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:34,783 INFO L93 Difference]: Finished difference Result 6526 states and 29886 transitions. [2021-10-08 16:14:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:14:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 7 [2021-10-08 16:14:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:34,829 INFO L225 Difference]: With dead ends: 6526 [2021-10-08 16:14:34,829 INFO L226 Difference]: Without dead ends: 6494 [2021-10-08 16:14:34,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:14:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-10-08 16:14:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4076. [2021-10-08 16:14:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 3981 states have (on average 4.988445114292891) internal successors, (19859), 4075 states have internal predecessors, (19859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 19859 transitions. [2021-10-08 16:14:35,144 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 19859 transitions. Word has length 7 [2021-10-08 16:14:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:35,151 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 19859 transitions. [2021-10-08 16:14:35,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 16:14:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 19859 transitions. [2021-10-08 16:14:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:14:35,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:35,155 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:35,197 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 16:14:35,356 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,SelfDestructingSolverStorable12 [2021-10-08 16:14:35,357 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277053, now seen corresponding path program 1 times [2021-10-08 16:14:35,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:35,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727734958] [2021-10-08 16:14:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:35,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:35,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:35,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727734958] [2021-10-08 16:14:35,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727734958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:35,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:35,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069768095] [2021-10-08 16:14:35,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:35,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:35,387 INFO L87 Difference]: Start difference. First operand 4076 states and 19859 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 16:14:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:35,435 INFO L93 Difference]: Finished difference Result 3380 states and 16432 transitions. [2021-10-08 16:14:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:35,436 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 16:14:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:35,457 INFO L225 Difference]: With dead ends: 3380 [2021-10-08 16:14:35,458 INFO L226 Difference]: Without dead ends: 3380 [2021-10-08 16:14:35,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2021-10-08 16:14:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3380. [2021-10-08 16:14:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3309 states have (on average 4.965850710184346) internal successors, (16432), 3379 states have internal predecessors, (16432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 16432 transitions. [2021-10-08 16:14:35,607 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 16432 transitions. Word has length 8 [2021-10-08 16:14:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:35,607 INFO L470 AbstractCegarLoop]: Abstraction has 3380 states and 16432 transitions. [2021-10-08 16:14:35,608 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 16:14:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 16432 transitions. [2021-10-08 16:14:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:14:35,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:35,609 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:35,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:14:35,609 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:35,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277054, now seen corresponding path program 1 times [2021-10-08 16:14:35,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:35,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984305816] [2021-10-08 16:14:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:35,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:35,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:35,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984305816] [2021-10-08 16:14:35,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984305816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:35,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496045607] [2021-10-08 16:14:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:35,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:35,647 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 16:14:35,664 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 16:14:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:35,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:35,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496045607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:35,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:35,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:14:35,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895440706] [2021-10-08 16:14:35,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:14:35,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:14:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:35,761 INFO L87 Difference]: Start difference. First operand 3380 states and 16432 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 16:14:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:35,859 INFO L93 Difference]: Finished difference Result 6358 states and 29091 transitions. [2021-10-08 16:14:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 8 [2021-10-08 16:14:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:35,901 INFO L225 Difference]: With dead ends: 6358 [2021-10-08 16:14:35,901 INFO L226 Difference]: Without dead ends: 6350 [2021-10-08 16:14:35,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-10-08 16:14:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 4120. [2021-10-08 16:14:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 4049 states have (on average 5.117806865892813) internal successors, (20722), 4119 states have internal predecessors, (20722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 20722 transitions. [2021-10-08 16:14:36,168 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 20722 transitions. Word has length 8 [2021-10-08 16:14:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:36,168 INFO L470 AbstractCegarLoop]: Abstraction has 4120 states and 20722 transitions. [2021-10-08 16:14:36,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 16:14:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 20722 transitions. [2021-10-08 16:14:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:14:36,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:36,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:36,238 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 16:14:36,383 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,SelfDestructingSolverStorable14 [2021-10-08 16:14:36,384 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:36,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1280304387, now seen corresponding path program 1 times [2021-10-08 16:14:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:36,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100542253] [2021-10-08 16:14:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:36,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:36,422 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 16:14:36,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:36,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100542253] [2021-10-08 16:14:36,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100542253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:36,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672183164] [2021-10-08 16:14:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:36,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:36,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:36,425 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 16:14:36,450 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 16:14:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:36,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:36,541 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 16:14:36,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672183164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:36,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:36,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 16:14:36,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406328684] [2021-10-08 16:14:36,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:36,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:36,543 INFO L87 Difference]: Start difference. First operand 4120 states and 20722 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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 16:14:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:36,650 INFO L93 Difference]: Finished difference Result 7302 states and 34952 transitions. [2021-10-08 16:14:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 16:14:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:36,701 INFO L225 Difference]: With dead ends: 7302 [2021-10-08 16:14:36,701 INFO L226 Difference]: Without dead ends: 7302 [2021-10-08 16:14:36,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2021-10-08 16:14:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 5126. [2021-10-08 16:14:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5055 states have (on average 5.232047477744807) internal successors, (26448), 5125 states have internal predecessors, (26448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 26448 transitions. [2021-10-08 16:14:36,999 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 26448 transitions. Word has length 8 [2021-10-08 16:14:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:36,999 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 26448 transitions. [2021-10-08 16:14:37,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 16:14:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 26448 transitions. [2021-10-08 16:14:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:14:37,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:37,001 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-08 16:14:37,038 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 16:14:37,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:37,216 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash -949280607, now seen corresponding path program 5 times [2021-10-08 16:14:37,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:37,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681764362] [2021-10-08 16:14:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:37,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:37,268 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 16:14:37,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:37,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681764362] [2021-10-08 16:14:37,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681764362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:37,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077322063] [2021-10-08 16:14:37,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:37,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:37,271 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 16:14:37,292 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 16:14:37,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:14:37,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:37,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:14:37,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:37,394 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 16:14:37,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077322063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:37,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:37,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-08 16:14:37,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661919729] [2021-10-08 16:14:37,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:14:37,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:14:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:14:37,397 INFO L87 Difference]: Start difference. First operand 5126 states and 26448 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 16:14:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:37,662 INFO L93 Difference]: Finished difference Result 9474 states and 46724 transitions. [2021-10-08 16:14:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:14:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 8 [2021-10-08 16:14:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:37,733 INFO L225 Difference]: With dead ends: 9474 [2021-10-08 16:14:37,733 INFO L226 Difference]: Without dead ends: 9426 [2021-10-08 16:14:37,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:14:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2021-10-08 16:14:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 5832. [2021-10-08 16:14:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5761 states have (on average 5.232077764277035) internal successors, (30142), 5831 states have internal predecessors, (30142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 30142 transitions. [2021-10-08 16:14:38,068 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 30142 transitions. Word has length 8 [2021-10-08 16:14:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:38,068 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 30142 transitions. [2021-10-08 16:14:38,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 16:14:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 30142 transitions. [2021-10-08 16:14:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:14:38,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:38,070 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:38,112 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 16:14:38,283 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,SelfDestructingSolverStorable16 [2021-10-08 16:14:38,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:38,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1034730843, now seen corresponding path program 2 times [2021-10-08 16:14:38,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:38,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987414370] [2021-10-08 16:14:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:38,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:38,321 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 16:14:38,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:38,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987414370] [2021-10-08 16:14:38,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987414370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:38,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5365484] [2021-10-08 16:14:38,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:38,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:38,323 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 16:14:38,350 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 16:14:38,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:38,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:38,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:38,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:38,423 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 16:14:38,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5365484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:38,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:38,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:38,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638538891] [2021-10-08 16:14:38,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:38,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:38,426 INFO L87 Difference]: Start difference. First operand 5832 states and 30142 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 16:14:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:38,479 INFO L93 Difference]: Finished difference Result 4906 states and 25214 transitions. [2021-10-08 16:14:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:38,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 9 [2021-10-08 16:14:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:38,509 INFO L225 Difference]: With dead ends: 4906 [2021-10-08 16:14:38,509 INFO L226 Difference]: Without dead ends: 4906 [2021-10-08 16:14:38,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2021-10-08 16:14:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 2574. [2021-10-08 16:14:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2527 states have (on average 4.747130985358132) internal successors, (11996), 2573 states have internal predecessors, (11996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 11996 transitions. [2021-10-08 16:14:38,693 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 11996 transitions. Word has length 9 [2021-10-08 16:14:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:38,693 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 11996 transitions. [2021-10-08 16:14:38,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 16:14:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 11996 transitions. [2021-10-08 16:14:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:14:38,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:38,694 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2021-10-08 16:14:38,731 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 16:14:38,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:14:38,908 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:38,910 INFO L82 PathProgramCache]: Analyzing trace with hash 637072716, now seen corresponding path program 6 times [2021-10-08 16:14:38,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:38,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641278543] [2021-10-08 16:14:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:38,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:38,986 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 16:14:38,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:38,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641278543] [2021-10-08 16:14:38,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641278543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:38,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194837514] [2021-10-08 16:14:38,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:38,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:38,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:38,989 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 16:14:38,990 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 16:14:39,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:14:39,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:39,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:14:39,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:39,095 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 16:14:39,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194837514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:39,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:39,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-08 16:14:39,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267287319] [2021-10-08 16:14:39,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:14:39,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:14:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:14:39,097 INFO L87 Difference]: Start difference. First operand 2574 states and 11996 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 16:14:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:39,261 INFO L93 Difference]: Finished difference Result 4658 states and 20837 transitions. [2021-10-08 16:14:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:14:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 9 [2021-10-08 16:14:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:39,287 INFO L225 Difference]: With dead ends: 4658 [2021-10-08 16:14:39,287 INFO L226 Difference]: Without dead ends: 4610 [2021-10-08 16:14:39,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:14:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-10-08 16:14:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 2866. [2021-10-08 16:14:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2819 states have (on average 4.749911316069528) internal successors, (13390), 2865 states have internal predecessors, (13390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 13390 transitions. [2021-10-08 16:14:39,404 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 13390 transitions. Word has length 9 [2021-10-08 16:14:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:39,404 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 13390 transitions. [2021-10-08 16:14:39,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 16:14:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 13390 transitions. [2021-10-08 16:14:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:14:39,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:39,406 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-08 16:14:39,435 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 16:14:39,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:39,618 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:39,620 INFO L82 PathProgramCache]: Analyzing trace with hash 63619896, now seen corresponding path program 2 times [2021-10-08 16:14:39,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:39,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394617133] [2021-10-08 16:14:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:39,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:39,654 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 16:14:39,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:39,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394617133] [2021-10-08 16:14:39,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394617133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:39,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019672136] [2021-10-08 16:14:39,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:39,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:39,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:39,657 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 16:14:39,677 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 16:14:39,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:39,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:39,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:14:39,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:39,774 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 16:14:39,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019672136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:39,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:39,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:39,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024432820] [2021-10-08 16:14:39,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:39,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:39,777 INFO L87 Difference]: Start difference. First operand 2866 states and 13390 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:39,801 INFO L93 Difference]: Finished difference Result 2386 states and 11170 transitions. [2021-10-08 16:14:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 10 [2021-10-08 16:14:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:39,812 INFO L225 Difference]: With dead ends: 2386 [2021-10-08 16:14:39,813 INFO L226 Difference]: Without dead ends: 2326 [2021-10-08 16:14:39,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-10-08 16:14:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 1296. [2021-10-08 16:14:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1265 states have (on average 4.238735177865613) internal successors, (5362), 1295 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5362 transitions. [2021-10-08 16:14:39,860 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5362 transitions. Word has length 10 [2021-10-08 16:14:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:39,861 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5362 transitions. [2021-10-08 16:14:39,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:14:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5362 transitions. [2021-10-08 16:14:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:14:39,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:39,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:39,884 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 16:14:40,062 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,SelfDestructingSolverStorable19 [2021-10-08 16:14:40,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 103258246, now seen corresponding path program 1 times [2021-10-08 16:14:40,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:40,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889399599] [2021-10-08 16:14:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:40,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:40,089 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 16:14:40,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:40,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889399599] [2021-10-08 16:14:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889399599] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:40,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:40,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94394303] [2021-10-08 16:14:40,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:40,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:40,091 INFO L87 Difference]: Start difference. First operand 1296 states and 5362 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 16:14:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:40,120 INFO L93 Difference]: Finished difference Result 1852 states and 7624 transitions. [2021-10-08 16:14:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 16:14:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:40,133 INFO L225 Difference]: With dead ends: 1852 [2021-10-08 16:14:40,133 INFO L226 Difference]: Without dead ends: 1836 [2021-10-08 16:14:40,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:14:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-10-08 16:14:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1558. [2021-10-08 16:14:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1527 states have (on average 4.376555337262606) internal successors, (6683), 1557 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6683 transitions. [2021-10-08 16:14:40,186 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6683 transitions. Word has length 10 [2021-10-08 16:14:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:40,187 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 6683 transitions. [2021-10-08 16:14:40,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 16:14:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6683 transitions. [2021-10-08 16:14:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:14:40,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:40,189 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2021-10-08 16:14:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 16:14:40,189 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1725581823, now seen corresponding path program 7 times [2021-10-08 16:14:40,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:40,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954079710] [2021-10-08 16:14:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:40,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:40,251 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 16:14:40,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:40,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954079710] [2021-10-08 16:14:40,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954079710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:40,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105932648] [2021-10-08 16:14:40,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:40,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:40,254 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 16:14:40,275 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 16:14:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:40,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:14:40,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:40,370 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 16:14:40,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105932648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:40,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:40,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-08 16:14:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100644106] [2021-10-08 16:14:40,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:14:40,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:14:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:14:40,373 INFO L87 Difference]: Start difference. First operand 1558 states and 6683 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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 16:14:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:40,515 INFO L93 Difference]: Finished difference Result 2890 states and 11963 transitions. [2021-10-08 16:14:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:14:40,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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 10 [2021-10-08 16:14:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:40,528 INFO L225 Difference]: With dead ends: 2890 [2021-10-08 16:14:40,529 INFO L226 Difference]: Without dead ends: 2814 [2021-10-08 16:14:40,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:14:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-10-08 16:14:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1708. [2021-10-08 16:14:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1677 states have (on average 4.376267143709004) internal successors, (7339), 1707 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 7339 transitions. [2021-10-08 16:14:40,595 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 7339 transitions. Word has length 10 [2021-10-08 16:14:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 7339 transitions. [2021-10-08 16:14:40,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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 16:14:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 7339 transitions. [2021-10-08 16:14:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:14:40,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:40,596 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-08 16:14:40,634 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 16:14:40,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:40,810 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1953428500, now seen corresponding path program 8 times [2021-10-08 16:14:40,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:40,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776757431] [2021-10-08 16:14:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:40,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:40,884 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 16:14:40,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:40,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776757431] [2021-10-08 16:14:40,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776757431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:40,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579121496] [2021-10-08 16:14:40,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:40,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:40,886 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 16:14:40,898 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 16:14:40,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:40,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:40,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:14:40,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:41,012 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 16:14:41,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579121496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:41,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:41,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-08 16:14:41,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604377684] [2021-10-08 16:14:41,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:14:41,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:14:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:14:41,015 INFO L87 Difference]: Start difference. First operand 1708 states and 7339 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 16:14:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:41,176 INFO L93 Difference]: Finished difference Result 3206 states and 13302 transitions. [2021-10-08 16:14:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:14:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 11 [2021-10-08 16:14:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:41,191 INFO L225 Difference]: With dead ends: 3206 [2021-10-08 16:14:41,191 INFO L226 Difference]: Without dead ends: 3126 [2021-10-08 16:14:41,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:14:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-08 16:14:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1858. [2021-10-08 16:14:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1827 states have (on average 4.376026272577997) internal successors, (7995), 1857 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7995 transitions. [2021-10-08 16:14:41,261 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7995 transitions. Word has length 11 [2021-10-08 16:14:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:41,261 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 7995 transitions. [2021-10-08 16:14:41,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 16:14:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7995 transitions. [2021-10-08 16:14:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:14:41,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:41,263 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:41,300 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 16:14:41,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,477 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:41,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821881, now seen corresponding path program 1 times [2021-10-08 16:14:41,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:41,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164699317] [2021-10-08 16:14:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:41,510 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 16:14:41,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:41,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164699317] [2021-10-08 16:14:41,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164699317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:41,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915894694] [2021-10-08 16:14:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:41,512 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 16:14:41,530 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 16:14:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:41,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:41,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:41,638 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 16:14:41,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915894694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:41,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:41,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 16:14:41,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214264845] [2021-10-08 16:14:41,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:41,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:41,640 INFO L87 Difference]: Start difference. First operand 1858 states and 7995 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 16:14:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:41,672 INFO L93 Difference]: Finished difference Result 1894 states and 7692 transitions. [2021-10-08 16:14:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 12 [2021-10-08 16:14:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:41,682 INFO L225 Difference]: With dead ends: 1894 [2021-10-08 16:14:41,682 INFO L226 Difference]: Without dead ends: 1894 [2021-10-08 16:14:41,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-10-08 16:14:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1580. [2021-10-08 16:14:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1557 states have (on average 4.292228644829801) internal successors, (6683), 1579 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 6683 transitions. [2021-10-08 16:14:41,739 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 6683 transitions. Word has length 12 [2021-10-08 16:14:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:41,739 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 6683 transitions. [2021-10-08 16:14:41,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 16:14:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 6683 transitions. [2021-10-08 16:14:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:14:41,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:41,741 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:41,788 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 16:14:41,955 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,SelfDestructingSolverStorable23 [2021-10-08 16:14:41,955 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:41,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821879, now seen corresponding path program 1 times [2021-10-08 16:14:41,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:41,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252322246] [2021-10-08 16:14:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:41,993 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 16:14:41,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:41,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252322246] [2021-10-08 16:14:41,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252322246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:41,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885788319] [2021-10-08 16:14:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:41,995 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 16:14:41,997 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 16:14:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:42,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:42,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:42,107 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 16:14:42,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885788319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:42,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:42,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:14:42,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019760571] [2021-10-08 16:14:42,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:14:42,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:14:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:42,111 INFO L87 Difference]: Start difference. First operand 1580 states and 6683 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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 16:14:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:42,143 INFO L93 Difference]: Finished difference Result 2546 states and 10346 transitions. [2021-10-08 16:14:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:42,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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 12 [2021-10-08 16:14:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:42,152 INFO L225 Difference]: With dead ends: 2546 [2021-10-08 16:14:42,152 INFO L226 Difference]: Without dead ends: 2518 [2021-10-08 16:14:42,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-10-08 16:14:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1890. [2021-10-08 16:14:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1867 states have (on average 4.411355115158008) internal successors, (8236), 1889 states have internal predecessors, (8236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 8236 transitions. [2021-10-08 16:14:42,223 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 8236 transitions. Word has length 12 [2021-10-08 16:14:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:42,223 INFO L470 AbstractCegarLoop]: Abstraction has 1890 states and 8236 transitions. [2021-10-08 16:14:42,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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 16:14:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 8236 transitions. [2021-10-08 16:14:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:14:42,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:42,225 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-08 16:14:42,261 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 16:14:42,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-08 16:14:42,439 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash -426740895, now seen corresponding path program 9 times [2021-10-08 16:14:42,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:42,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589162539] [2021-10-08 16:14:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:42,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:42,522 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 16:14:42,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:42,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589162539] [2021-10-08 16:14:42,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589162539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:42,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294646415] [2021-10-08 16:14:42,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:42,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:42,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:42,527 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 16:14:42,536 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 16:14:42,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-08 16:14:42,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:42,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:14:42,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:42,666 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 16:14:42,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294646415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:42,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:42,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-08 16:14:42,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376401898] [2021-10-08 16:14:42,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:14:42,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:42,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:14:42,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:42,669 INFO L87 Difference]: Start difference. First operand 1890 states and 8236 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 16:14:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:42,827 INFO L93 Difference]: Finished difference Result 3554 states and 15102 transitions. [2021-10-08 16:14:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:14:42,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 12 [2021-10-08 16:14:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:42,839 INFO L225 Difference]: With dead ends: 3554 [2021-10-08 16:14:42,839 INFO L226 Difference]: Without dead ends: 3430 [2021-10-08 16:14:42,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2021-10-08 16:14:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2048. [2021-10-08 16:14:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2025 states have (on average 4.403456790123457) internal successors, (8917), 2047 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 8917 transitions. [2021-10-08 16:14:42,896 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 8917 transitions. Word has length 12 [2021-10-08 16:14:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:42,897 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 8917 transitions. [2021-10-08 16:14:42,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 16:14:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 8917 transitions. [2021-10-08 16:14:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:14:42,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:42,899 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-08 16:14:42,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-08 16:14:43,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,113 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash -344065396, now seen corresponding path program 10 times [2021-10-08 16:14:43,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:43,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659182134] [2021-10-08 16:14:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:43,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:43,210 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 16:14:43,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:43,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659182134] [2021-10-08 16:14:43,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659182134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:43,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623467289] [2021-10-08 16:14:43,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:43,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:43,212 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 16:14:43,230 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 16:14:43,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:43,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:43,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:14:43,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:43,371 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 16:14:43,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623467289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:43,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:43,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-08 16:14:43,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263042693] [2021-10-08 16:14:43,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:14:43,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:14:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:43,374 INFO L87 Difference]: Start difference. First operand 2048 states and 8917 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 16:14:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:43,546 INFO L93 Difference]: Finished difference Result 3878 states and 16488 transitions. [2021-10-08 16:14:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:14:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 13 [2021-10-08 16:14:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:43,560 INFO L225 Difference]: With dead ends: 3878 [2021-10-08 16:14:43,560 INFO L226 Difference]: Without dead ends: 3750 [2021-10-08 16:14:43,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-10-08 16:14:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 2206. [2021-10-08 16:14:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2183 states have (on average 4.396701786532295) internal successors, (9598), 2205 states have internal predecessors, (9598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 9598 transitions. [2021-10-08 16:14:43,643 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 9598 transitions. Word has length 13 [2021-10-08 16:14:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:43,643 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 9598 transitions. [2021-10-08 16:14:43,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 16:14:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 9598 transitions. [2021-10-08 16:14:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:14:43,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:43,646 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:43,686 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 16:14:43,860 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,SelfDestructingSolverStorable26 [2021-10-08 16:14:43,861 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:43,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1638725724, now seen corresponding path program 2 times [2021-10-08 16:14:43,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:43,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524719162] [2021-10-08 16:14:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:43,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:43,919 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 16:14:43,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:43,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524719162] [2021-10-08 16:14:43,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524719162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:43,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662795353] [2021-10-08 16:14:43,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:43,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:43,922 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 16:14:43,930 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 16:14:44,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:44,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:14:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:44,079 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 16:14:44,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662795353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:44,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:44,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:44,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289619522] [2021-10-08 16:14:44,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:44,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:44,081 INFO L87 Difference]: Start difference. First operand 2206 states and 9598 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 16:14:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:44,099 INFO L93 Difference]: Finished difference Result 1884 states and 8060 transitions. [2021-10-08 16:14:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 14 [2021-10-08 16:14:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:44,104 INFO L225 Difference]: With dead ends: 1884 [2021-10-08 16:14:44,105 INFO L226 Difference]: Without dead ends: 1528 [2021-10-08 16:14:44,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-08 16:14:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 972. [2021-10-08 16:14:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 957 states have (on average 3.9456635318704283) internal successors, (3776), 971 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3776 transitions. [2021-10-08 16:14:44,130 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3776 transitions. Word has length 14 [2021-10-08 16:14:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:44,131 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 3776 transitions. [2021-10-08 16:14:44,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 16:14:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3776 transitions. [2021-10-08 16:14:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:14:44,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:44,133 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2021-10-08 16:14:44,158 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 16:14:44,339 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,SelfDestructingSolverStorable27 [2021-10-08 16:14:44,340 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2076092223, now seen corresponding path program 11 times [2021-10-08 16:14:44,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:44,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308782933] [2021-10-08 16:14:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:44,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:44,449 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 16:14:44,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:44,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308782933] [2021-10-08 16:14:44,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308782933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:44,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391790714] [2021-10-08 16:14:44,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:44,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:44,451 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 16:14:44,452 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 16:14:44,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-08 16:14:44,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:44,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:14:44,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:44,614 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 16:14:44,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391790714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:44,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:44,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-08 16:14:44,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342487168] [2021-10-08 16:14:44,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:14:44,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:14:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:44,616 INFO L87 Difference]: Start difference. First operand 972 states and 3776 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 16:14:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:44,747 INFO L93 Difference]: Finished difference Result 1888 states and 7330 transitions. [2021-10-08 16:14:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:14:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 14 [2021-10-08 16:14:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:44,752 INFO L225 Difference]: With dead ends: 1888 [2021-10-08 16:14:44,753 INFO L226 Difference]: Without dead ends: 1648 [2021-10-08 16:14:44,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-10-08 16:14:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1032. [2021-10-08 16:14:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1017 states have (on average 3.9410029498525074) internal successors, (4008), 1031 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 4008 transitions. [2021-10-08 16:14:44,790 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 4008 transitions. Word has length 14 [2021-10-08 16:14:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 4008 transitions. [2021-10-08 16:14:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 16:14:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 4008 transitions. [2021-10-08 16:14:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:44,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:44,793 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-08 16:14:44,833 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 16:14:45,008 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,SelfDestructingSolverStorable28 [2021-10-08 16:14:45,009 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash 65650988, now seen corresponding path program 12 times [2021-10-08 16:14:45,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:45,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699264886] [2021-10-08 16:14:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:45,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,131 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 16:14:45,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:45,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699264886] [2021-10-08 16:14:45,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699264886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609932557] [2021-10-08 16:14:45,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:45,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:45,134 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 16:14:45,135 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 16:14:45,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 16:14:45,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:45,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:14:45,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:45,306 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 16:14:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609932557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:45,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-08 16:14:45,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494783437] [2021-10-08 16:14:45,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:14:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:14:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:45,308 INFO L87 Difference]: Start difference. First operand 1032 states and 4008 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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 16:14:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:45,466 INFO L93 Difference]: Finished difference Result 2024 states and 7863 transitions. [2021-10-08 16:14:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:14:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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 15 [2021-10-08 16:14:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:45,474 INFO L225 Difference]: With dead ends: 2024 [2021-10-08 16:14:45,474 INFO L226 Difference]: Without dead ends: 1764 [2021-10-08 16:14:45,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-08 16:14:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1092. [2021-10-08 16:14:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1077 states have (on average 3.9368616527390903) internal successors, (4240), 1091 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 4240 transitions. [2021-10-08 16:14:45,511 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 4240 transitions. Word has length 15 [2021-10-08 16:14:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:45,511 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 4240 transitions. [2021-10-08 16:14:45,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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 16:14:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 4240 transitions. [2021-10-08 16:14:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:45,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:45,514 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2021-10-08 16:14:45,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-08 16:14:45,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,729 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:45,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2035181089, now seen corresponding path program 13 times [2021-10-08 16:14:45,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:45,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059189871] [2021-10-08 16:14:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:45,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,862 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 16:14:45,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:45,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059189871] [2021-10-08 16:14:45,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059189871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952692871] [2021-10-08 16:14:45,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:45,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:45,864 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 16:14:45,872 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 16:14:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:14:45,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:46,047 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 16:14:46,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952692871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:46,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:46,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-08 16:14:46,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639701235] [2021-10-08 16:14:46,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:14:46,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:14:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:14:46,049 INFO L87 Difference]: Start difference. First operand 1092 states and 4240 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 16:14:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:46,211 INFO L93 Difference]: Finished difference Result 2160 states and 8396 transitions. [2021-10-08 16:14:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:14:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 16 [2021-10-08 16:14:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:46,216 INFO L225 Difference]: With dead ends: 2160 [2021-10-08 16:14:46,216 INFO L226 Difference]: Without dead ends: 1880 [2021-10-08 16:14:46,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:14:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-10-08 16:14:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1152. [2021-10-08 16:14:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1137 states have (on average 3.9331574318381706) internal successors, (4472), 1151 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4472 transitions. [2021-10-08 16:14:46,245 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4472 transitions. Word has length 16 [2021-10-08 16:14:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:46,246 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4472 transitions. [2021-10-08 16:14:46,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 16:14:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4472 transitions. [2021-10-08 16:14:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:14:46,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:46,248 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2021-10-08 16:14:46,273 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 16:14:46,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:46,451 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1333895220, now seen corresponding path program 14 times [2021-10-08 16:14:46,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:46,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062579148] [2021-10-08 16:14:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:46,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:46,590 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 16:14:46,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:46,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062579148] [2021-10-08 16:14:46,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062579148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:46,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618104153] [2021-10-08 16:14:46,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:46,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:46,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:46,595 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 16:14:46,596 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 16:14:46,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:46,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:46,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:14:46,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:46,776 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 16:14:46,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618104153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:46,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:46,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-08 16:14:46,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900942926] [2021-10-08 16:14:46,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:14:46,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:14:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:46,778 INFO L87 Difference]: Start difference. First operand 1152 states and 4472 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 16:14:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:46,937 INFO L93 Difference]: Finished difference Result 2296 states and 8929 transitions. [2021-10-08 16:14:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:14:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 17 [2021-10-08 16:14:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:46,944 INFO L225 Difference]: With dead ends: 2296 [2021-10-08 16:14:46,944 INFO L226 Difference]: Without dead ends: 1996 [2021-10-08 16:14:46,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:46,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-10-08 16:14:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1212. [2021-10-08 16:14:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1197 states have (on average 3.9298245614035086) internal successors, (4704), 1211 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4704 transitions. [2021-10-08 16:14:46,974 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4704 transitions. Word has length 17 [2021-10-08 16:14:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:46,974 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 4704 transitions. [2021-10-08 16:14:46,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 16:14:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4704 transitions. [2021-10-08 16:14:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:46,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:46,977 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2021-10-08 16:14:47,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:47,192 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,SelfDestructingSolverStorable31 [2021-10-08 16:14:47,193 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1598921601, now seen corresponding path program 15 times [2021-10-08 16:14:47,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:47,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690409881] [2021-10-08 16:14:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:47,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:47,347 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 16:14:47,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:47,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690409881] [2021-10-08 16:14:47,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690409881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:47,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246701266] [2021-10-08 16:14:47,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:47,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:47,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:47,350 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 16:14:47,353 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 16:14:47,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-08 16:14:47,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:47,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:14:47,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:47,549 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 16:14:47,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246701266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:47,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:47,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-08 16:14:47,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064934586] [2021-10-08 16:14:47,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:14:47,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:14:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:14:47,551 INFO L87 Difference]: Start difference. First operand 1212 states and 4704 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 16:14:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:47,741 INFO L93 Difference]: Finished difference Result 2432 states and 9462 transitions. [2021-10-08 16:14:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:14:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 18 [2021-10-08 16:14:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:47,751 INFO L225 Difference]: With dead ends: 2432 [2021-10-08 16:14:47,751 INFO L226 Difference]: Without dead ends: 2112 [2021-10-08 16:14:47,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:14:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-10-08 16:14:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1272. [2021-10-08 16:14:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1257 states have (on average 3.9268098647573586) internal successors, (4936), 1271 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 4936 transitions. [2021-10-08 16:14:47,784 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 4936 transitions. Word has length 18 [2021-10-08 16:14:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:47,784 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 4936 transitions. [2021-10-08 16:14:47,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 16:14:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 4936 transitions. [2021-10-08 16:14:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:14:47,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:47,787 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2021-10-08 16:14:47,813 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 16:14:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:47,996 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1973037460, now seen corresponding path program 16 times [2021-10-08 16:14:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:47,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129917647] [2021-10-08 16:14:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:47,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:48,172 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 16:14:48,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:48,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129917647] [2021-10-08 16:14:48,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129917647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:48,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134688851] [2021-10-08 16:14:48,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:48,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:48,179 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 16:14:48,206 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 16:14:48,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:48,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:48,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:14:48,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:48,393 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 16:14:48,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134688851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:48,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:48,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-08 16:14:48,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561026958] [2021-10-08 16:14:48,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:14:48,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:14:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:14:48,396 INFO L87 Difference]: Start difference. First operand 1272 states and 4936 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 16:14:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:48,600 INFO L93 Difference]: Finished difference Result 2568 states and 9995 transitions. [2021-10-08 16:14:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:14:48,601 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 19 [2021-10-08 16:14:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:48,608 INFO L225 Difference]: With dead ends: 2568 [2021-10-08 16:14:48,608 INFO L226 Difference]: Without dead ends: 2228 [2021-10-08 16:14:48,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:14:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-10-08 16:14:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1332. [2021-10-08 16:14:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1317 states have (on average 3.924069855732726) internal successors, (5168), 1331 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 5168 transitions. [2021-10-08 16:14:48,638 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 5168 transitions. Word has length 19 [2021-10-08 16:14:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:48,638 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 5168 transitions. [2021-10-08 16:14:48,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 16:14:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 5168 transitions. [2021-10-08 16:14:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:14:48,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:48,641 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2021-10-08 16:14:48,677 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 16:14:48,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:48,855 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1034618655, now seen corresponding path program 17 times [2021-10-08 16:14:48,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:48,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040433072] [2021-10-08 16:14:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:48,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:49,054 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 16:14:49,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:49,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040433072] [2021-10-08 16:14:49,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040433072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025951421] [2021-10-08 16:14:49,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:49,057 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:49,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:49,060 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 16:14:49,061 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 16:14:49,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:14:49,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:49,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:14:49,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:49,273 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 16:14:49,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025951421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:49,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-08 16:14:49,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815194567] [2021-10-08 16:14:49,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:14:49,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:14:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:14:49,275 INFO L87 Difference]: Start difference. First operand 1332 states and 5168 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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 16:14:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:49,495 INFO L93 Difference]: Finished difference Result 2704 states and 10528 transitions. [2021-10-08 16:14:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:14:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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 20 [2021-10-08 16:14:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:49,505 INFO L225 Difference]: With dead ends: 2704 [2021-10-08 16:14:49,505 INFO L226 Difference]: Without dead ends: 2344 [2021-10-08 16:14:49,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:14:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-08 16:14:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1392. [2021-10-08 16:14:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1377 states have (on average 3.9215686274509802) internal successors, (5400), 1391 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5400 transitions. [2021-10-08 16:14:49,545 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5400 transitions. Word has length 20 [2021-10-08 16:14:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:49,545 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5400 transitions. [2021-10-08 16:14:49,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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 16:14:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5400 transitions. [2021-10-08 16:14:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:14:49,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:49,548 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2021-10-08 16:14:49,572 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 16:14:49,756 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,SelfDestructingSolverStorable34 [2021-10-08 16:14:49,757 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2008406772, now seen corresponding path program 18 times [2021-10-08 16:14:49,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:49,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891790034] [2021-10-08 16:14:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:49,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:49,957 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 16:14:49,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891790034] [2021-10-08 16:14:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891790034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064772581] [2021-10-08 16:14:49,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:49,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:49,960 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 16:14:49,990 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 16:14:50,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-08 16:14:50,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:50,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:14:50,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:50,196 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 16:14:50,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064772581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:50,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:50,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-08 16:14:50,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059622463] [2021-10-08 16:14:50,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:14:50,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:14:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:14:50,200 INFO L87 Difference]: Start difference. First operand 1392 states and 5400 transitions. Second operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 16:14:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:50,438 INFO L93 Difference]: Finished difference Result 2840 states and 11061 transitions. [2021-10-08 16:14:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:14:50,438 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 21 [2021-10-08 16:14:50,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:50,450 INFO L225 Difference]: With dead ends: 2840 [2021-10-08 16:14:50,450 INFO L226 Difference]: Without dead ends: 2460 [2021-10-08 16:14:50,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:14:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-10-08 16:14:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1452. [2021-10-08 16:14:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1437 states have (on average 3.919276270006959) internal successors, (5632), 1451 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5632 transitions. [2021-10-08 16:14:50,502 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5632 transitions. Word has length 21 [2021-10-08 16:14:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:50,502 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5632 transitions. [2021-10-08 16:14:50,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 16:14:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5632 transitions. [2021-10-08 16:14:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:14:50,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:50,506 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2021-10-08 16:14:50,545 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 16:14:50,720 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,SelfDestructingSolverStorable35 [2021-10-08 16:14:50,721 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2131067327, now seen corresponding path program 19 times [2021-10-08 16:14:50,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:50,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125249150] [2021-10-08 16:14:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:50,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:50,964 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 16:14:50,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:50,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125249150] [2021-10-08 16:14:50,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125249150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:50,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966994449] [2021-10-08 16:14:50,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:50,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:50,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:50,967 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 16:14:50,968 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 16:14:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:51,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:14:51,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:51,215 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 16:14:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966994449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:51,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:51,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-08 16:14:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281485860] [2021-10-08 16:14:51,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:14:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:14:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:14:51,218 INFO L87 Difference]: Start difference. First operand 1452 states and 5632 transitions. Second operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 16:14:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:51,445 INFO L93 Difference]: Finished difference Result 2976 states and 11594 transitions. [2021-10-08 16:14:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:14:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 22 [2021-10-08 16:14:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:51,453 INFO L225 Difference]: With dead ends: 2976 [2021-10-08 16:14:51,454 INFO L226 Difference]: Without dead ends: 2576 [2021-10-08 16:14:51,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 182.1ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:14:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-10-08 16:14:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1512. [2021-10-08 16:14:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1497 states have (on average 3.917167668670675) internal successors, (5864), 1511 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5864 transitions. [2021-10-08 16:14:51,489 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5864 transitions. Word has length 22 [2021-10-08 16:14:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:51,489 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5864 transitions. [2021-10-08 16:14:51,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 16:14:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5864 transitions. [2021-10-08 16:14:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:14:51,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:51,495 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-08 16:14:51,518 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 16:14:51,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:51,701 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1638577236, now seen corresponding path program 20 times [2021-10-08 16:14:51,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:51,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788556398] [2021-10-08 16:14:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:51,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:51,990 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 16:14:51,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:51,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788556398] [2021-10-08 16:14:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788556398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860188814] [2021-10-08 16:14:51,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:51,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:51,992 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 16:14:51,995 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 16:14:52,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:52,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:52,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:14:52,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:52,239 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 16:14:52,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860188814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:52,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:52,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-08 16:14:52,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027998045] [2021-10-08 16:14:52,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:14:52,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:14:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:14:52,243 INFO L87 Difference]: Start difference. First operand 1512 states and 5864 transitions. Second operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 16:14:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:52,522 INFO L93 Difference]: Finished difference Result 3112 states and 12127 transitions. [2021-10-08 16:14:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:14:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 23 [2021-10-08 16:14:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:52,530 INFO L225 Difference]: With dead ends: 3112 [2021-10-08 16:14:52,530 INFO L226 Difference]: Without dead ends: 2692 [2021-10-08 16:14:52,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:14:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-10-08 16:14:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1572. [2021-10-08 16:14:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1557 states have (on average 3.9152215799614645) internal successors, (6096), 1571 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 6096 transitions. [2021-10-08 16:14:52,565 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 6096 transitions. Word has length 23 [2021-10-08 16:14:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:52,565 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 6096 transitions. [2021-10-08 16:14:52,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 16:14:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 6096 transitions. [2021-10-08 16:14:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:14:52,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:52,568 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2021-10-08 16:14:52,594 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 16:14:52,768 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,SelfDestructingSolverStorable37 [2021-10-08 16:14:52,769 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:52,769 INFO L82 PathProgramCache]: Analyzing trace with hash 743713697, now seen corresponding path program 21 times [2021-10-08 16:14:52,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:52,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275404331] [2021-10-08 16:14:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:52,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:53,047 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 16:14:53,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:53,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275404331] [2021-10-08 16:14:53,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275404331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:53,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973896510] [2021-10-08 16:14:53,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:53,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:53,049 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 16:14:53,065 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 16:14:53,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-08 16:14:53,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:14:53,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:53,326 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 16:14:53,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973896510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:53,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:53,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-08 16:14:53,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128039187] [2021-10-08 16:14:53,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:14:53,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:14:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:14:53,329 INFO L87 Difference]: Start difference. First operand 1572 states and 6096 transitions. Second operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 16:14:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:53,651 INFO L93 Difference]: Finished difference Result 3248 states and 12660 transitions. [2021-10-08 16:14:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:14:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 24 [2021-10-08 16:14:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:53,665 INFO L225 Difference]: With dead ends: 3248 [2021-10-08 16:14:53,665 INFO L226 Difference]: Without dead ends: 2808 [2021-10-08 16:14:53,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:14:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-10-08 16:14:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1632. [2021-10-08 16:14:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1617 states have (on average 3.9134199134199132) internal successors, (6328), 1631 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 6328 transitions. [2021-10-08 16:14:53,727 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 6328 transitions. Word has length 24 [2021-10-08 16:14:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:53,727 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 6328 transitions. [2021-10-08 16:14:53,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 16:14:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 6328 transitions. [2021-10-08 16:14:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:14:53,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:53,732 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2021-10-08 16:14:53,772 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 16:14:53,947 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,SelfDestructingSolverStorable38 [2021-10-08 16:14:53,948 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:53,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1580288588, now seen corresponding path program 22 times [2021-10-08 16:14:53,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:53,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797360330] [2021-10-08 16:14:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:53,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:54,236 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 16:14:54,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:54,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797360330] [2021-10-08 16:14:54,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797360330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:54,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239047259] [2021-10-08 16:14:54,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:54,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:54,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:54,238 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 16:14:54,243 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 16:14:54,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:54,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:54,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:14:54,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:54,522 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 16:14:54,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239047259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:54,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:54,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-08 16:14:54,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279135190] [2021-10-08 16:14:54,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:14:54,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:14:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:14:54,525 INFO L87 Difference]: Start difference. First operand 1632 states and 6328 transitions. Second operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 16:14:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:54,817 INFO L93 Difference]: Finished difference Result 3384 states and 13193 transitions. [2021-10-08 16:14:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:14:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 25 [2021-10-08 16:14:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:54,826 INFO L225 Difference]: With dead ends: 3384 [2021-10-08 16:14:54,826 INFO L226 Difference]: Without dead ends: 2924 [2021-10-08 16:14:54,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 215.1ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:14:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-10-08 16:14:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1692. [2021-10-08 16:14:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1677 states have (on average 3.911747167561121) internal successors, (6560), 1691 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 6560 transitions. [2021-10-08 16:14:54,867 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 6560 transitions. Word has length 25 [2021-10-08 16:14:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:54,867 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 6560 transitions. [2021-10-08 16:14:54,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 16:14:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 6560 transitions. [2021-10-08 16:14:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:14:54,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:54,870 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2021-10-08 16:14:54,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-08 16:14:55,070 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,SelfDestructingSolverStorable39 [2021-10-08 16:14:55,071 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:55,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1744306433, now seen corresponding path program 23 times [2021-10-08 16:14:55,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:55,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914043095] [2021-10-08 16:14:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:55,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:55,405 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 16:14:55,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:55,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914043095] [2021-10-08 16:14:55,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914043095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:55,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312549162] [2021-10-08 16:14:55,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:55,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:55,410 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 16:14:55,428 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 16:14:55,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-08 16:14:55,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:55,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:14:55,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:55,682 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 16:14:55,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312549162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:55,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:55,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-08 16:14:55,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225641773] [2021-10-08 16:14:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:14:55,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:14:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:14:55,684 INFO L87 Difference]: Start difference. First operand 1692 states and 6560 transitions. Second operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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 16:14:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:56,053 INFO L93 Difference]: Finished difference Result 3520 states and 13726 transitions. [2021-10-08 16:14:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:14:56,054 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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 26 [2021-10-08 16:14:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:56,067 INFO L225 Difference]: With dead ends: 3520 [2021-10-08 16:14:56,067 INFO L226 Difference]: Without dead ends: 3040 [2021-10-08 16:14:56,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 238.6ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:14:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-10-08 16:14:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1752. [2021-10-08 16:14:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1737 states have (on average 3.9101899827288427) internal successors, (6792), 1751 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 6792 transitions. [2021-10-08 16:14:56,134 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 6792 transitions. Word has length 26 [2021-10-08 16:14:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:56,134 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 6792 transitions. [2021-10-08 16:14:56,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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 16:14:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 6792 transitions. [2021-10-08 16:14:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:14:56,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:56,139 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2021-10-08 16:14:56,180 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 16:14:56,352 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,SelfDestructingSolverStorable40 [2021-10-08 16:14:56,353 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1761074964, now seen corresponding path program 24 times [2021-10-08 16:14:56,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:56,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41005438] [2021-10-08 16:14:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:56,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:56,685 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 16:14:56,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:56,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41005438] [2021-10-08 16:14:56,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41005438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:56,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245715309] [2021-10-08 16:14:56,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:56,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:56,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:56,691 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 16:14:56,722 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 16:14:56,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-08 16:14:56,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:56,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:14:56,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:57,005 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 16:14:57,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245715309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:57,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:57,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-08 16:14:57,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126302574] [2021-10-08 16:14:57,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:14:57,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:14:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:14:57,007 INFO L87 Difference]: Start difference. First operand 1752 states and 6792 transitions. Second operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 16:14:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:57,346 INFO L93 Difference]: Finished difference Result 3656 states and 14259 transitions. [2021-10-08 16:14:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:14:57,347 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 27 [2021-10-08 16:14:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:57,358 INFO L225 Difference]: With dead ends: 3656 [2021-10-08 16:14:57,358 INFO L226 Difference]: Without dead ends: 3156 [2021-10-08 16:14:57,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 264.4ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:14:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-10-08 16:14:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1812. [2021-10-08 16:14:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1797 states have (on average 3.9087367835281026) internal successors, (7024), 1811 states have internal predecessors, (7024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 7024 transitions. [2021-10-08 16:14:57,400 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 7024 transitions. Word has length 27 [2021-10-08 16:14:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:57,400 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 7024 transitions. [2021-10-08 16:14:57,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 16:14:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 7024 transitions. [2021-10-08 16:14:57,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:14:57,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:57,403 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2021-10-08 16:14:57,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:57,604 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:57,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1241251425, now seen corresponding path program 25 times [2021-10-08 16:14:57,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:57,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881737682] [2021-10-08 16:14:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:57,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:57,954 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 16:14:57,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:57,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881737682] [2021-10-08 16:14:57,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881737682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:57,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539628818] [2021-10-08 16:14:57,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:57,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:57,957 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 16:14:57,979 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 16:14:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:58,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:14:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:58,231 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 16:14:58,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539628818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:58,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:58,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-08 16:14:58,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438358017] [2021-10-08 16:14:58,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:14:58,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:14:58,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:14:58,234 INFO L87 Difference]: Start difference. First operand 1812 states and 7024 transitions. Second operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 16:14:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:58,591 INFO L93 Difference]: Finished difference Result 3792 states and 14792 transitions. [2021-10-08 16:14:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:14:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 28 [2021-10-08 16:14:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:58,606 INFO L225 Difference]: With dead ends: 3792 [2021-10-08 16:14:58,606 INFO L226 Difference]: Without dead ends: 3272 [2021-10-08 16:14:58,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 277.5ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:14:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-10-08 16:14:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1872. [2021-10-08 16:14:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1857 states have (on average 3.907377490576198) internal successors, (7256), 1871 states have internal predecessors, (7256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 7256 transitions. [2021-10-08 16:14:58,669 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 7256 transitions. Word has length 28 [2021-10-08 16:14:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:58,671 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 7256 transitions. [2021-10-08 16:14:58,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 16:14:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 7256 transitions. [2021-10-08 16:14:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:14:58,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:58,676 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2021-10-08 16:14:58,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-08 16:14:58,890 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,SelfDestructingSolverStorable42 [2021-10-08 16:14:58,891 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:14:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:58,892 INFO L82 PathProgramCache]: Analyzing trace with hash -175911028, now seen corresponding path program 26 times [2021-10-08 16:14:58,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:58,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297427947] [2021-10-08 16:14:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:58,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:59,300 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 16:14:59,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:59,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297427947] [2021-10-08 16:14:59,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297427947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:59,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912902705] [2021-10-08 16:14:59,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:59,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:59,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:59,302 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 16:14:59,324 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 16:14:59,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:59,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:59,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:14:59,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:59,605 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 16:14:59,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912902705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:59,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:59,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-08 16:14:59,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444487272] [2021-10-08 16:14:59,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:14:59,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:14:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:14:59,607 INFO L87 Difference]: Start difference. First operand 1872 states and 7256 transitions. Second operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 16:14:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:59,926 INFO L93 Difference]: Finished difference Result 3928 states and 15325 transitions. [2021-10-08 16:14:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:14:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 29 [2021-10-08 16:14:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:59,937 INFO L225 Difference]: With dead ends: 3928 [2021-10-08 16:14:59,937 INFO L226 Difference]: Without dead ends: 3388 [2021-10-08 16:14:59,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 295.0ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:14:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2021-10-08 16:14:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1932. [2021-10-08 16:14:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1917 states have (on average 3.9061032863849765) internal successors, (7488), 1931 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7488 transitions. [2021-10-08 16:14:59,982 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7488 transitions. Word has length 29 [2021-10-08 16:14:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:59,982 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 7488 transitions. [2021-10-08 16:14:59,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 16:14:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7488 transitions. [2021-10-08 16:14:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:14:59,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:59,986 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2021-10-08 16:15:00,009 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 16:15:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:00,187 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1158274111, now seen corresponding path program 27 times [2021-10-08 16:15:00,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:00,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242223428] [2021-10-08 16:15:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:00,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:00,613 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 16:15:00,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:00,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242223428] [2021-10-08 16:15:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242223428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:00,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915271413] [2021-10-08 16:15:00,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:00,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:00,617 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 16:15:00,639 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 16:15:00,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-08 16:15:00,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:00,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:15:00,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:01,025 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 16:15:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915271413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:01,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:01,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-08 16:15:01,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727272499] [2021-10-08 16:15:01,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:15:01,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:15:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:15:01,028 INFO L87 Difference]: Start difference. First operand 1932 states and 7488 transitions. Second operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 16:15:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:01,533 INFO L93 Difference]: Finished difference Result 4064 states and 15858 transitions. [2021-10-08 16:15:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:15:01,534 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 30 [2021-10-08 16:15:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:01,549 INFO L225 Difference]: With dead ends: 4064 [2021-10-08 16:15:01,549 INFO L226 Difference]: Without dead ends: 3504 [2021-10-08 16:15:01,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 350.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:15:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-10-08 16:15:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 1992. [2021-10-08 16:15:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1977 states have (on average 3.904906423874557) internal successors, (7720), 1991 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 7720 transitions. [2021-10-08 16:15:01,623 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 7720 transitions. Word has length 30 [2021-10-08 16:15:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:01,623 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 7720 transitions. [2021-10-08 16:15:01,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 16:15:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 7720 transitions. [2021-10-08 16:15:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:15:01,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:01,628 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2021-10-08 16:15:01,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-08 16:15:01,841 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,SelfDestructingSolverStorable44 [2021-10-08 16:15:01,841 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:01,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:01,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1546758612, now seen corresponding path program 28 times [2021-10-08 16:15:01,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:01,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732702424] [2021-10-08 16:15:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:01,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:02,274 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 16:15:02,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:02,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732702424] [2021-10-08 16:15:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732702424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:02,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755209911] [2021-10-08 16:15:02,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:02,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:02,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:02,280 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 16:15:02,302 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 16:15:02,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:02,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:15:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:02,598 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 16:15:02,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755209911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:02,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:02,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-08 16:15:02,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712586203] [2021-10-08 16:15:02,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:15:02,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:02,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:15:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:15:02,601 INFO L87 Difference]: Start difference. First operand 1992 states and 7720 transitions. Second operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 16:15:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:03,024 INFO L93 Difference]: Finished difference Result 4200 states and 16391 transitions. [2021-10-08 16:15:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:15:03,025 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 31 [2021-10-08 16:15:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:03,036 INFO L225 Difference]: With dead ends: 4200 [2021-10-08 16:15:03,036 INFO L226 Difference]: Without dead ends: 3620 [2021-10-08 16:15:03,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 326.9ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:15:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2021-10-08 16:15:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2052. [2021-10-08 16:15:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2037 states have (on average 3.9037800687285222) internal successors, (7952), 2051 states have internal predecessors, (7952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 7952 transitions. [2021-10-08 16:15:03,121 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 7952 transitions. Word has length 31 [2021-10-08 16:15:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:03,121 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 7952 transitions. [2021-10-08 16:15:03,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 16:15:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 7952 transitions. [2021-10-08 16:15:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:15:03,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:03,124 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2021-10-08 16:15:03,148 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 16:15:03,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:03,325 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash -704876255, now seen corresponding path program 29 times [2021-10-08 16:15:03,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:03,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141151331] [2021-10-08 16:15:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:03,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:03,752 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 16:15:03,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:03,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141151331] [2021-10-08 16:15:03,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141151331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:03,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92840316] [2021-10-08 16:15:03,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:03,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:03,755 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 16:15:03,761 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 16:15:03,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-08 16:15:03,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:03,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:15:03,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:04,056 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 16:15:04,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92840316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:04,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:04,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-08 16:15:04,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748391488] [2021-10-08 16:15:04,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:15:04,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:15:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:15:04,059 INFO L87 Difference]: Start difference. First operand 2052 states and 7952 transitions. Second operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 16:15:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:04,514 INFO L93 Difference]: Finished difference Result 4336 states and 16924 transitions. [2021-10-08 16:15:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:15:04,514 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 32 [2021-10-08 16:15:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:04,526 INFO L225 Difference]: With dead ends: 4336 [2021-10-08 16:15:04,526 INFO L226 Difference]: Without dead ends: 3736 [2021-10-08 16:15:04,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 354.2ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:15:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-08 16:15:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 2112. [2021-10-08 16:15:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2097 states have (on average 3.9027181688125894) internal successors, (8184), 2111 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 8184 transitions. [2021-10-08 16:15:04,592 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 8184 transitions. Word has length 32 [2021-10-08 16:15:04,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:04,592 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 8184 transitions. [2021-10-08 16:15:04,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 16:15:04,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 8184 transitions. [2021-10-08 16:15:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:15:04,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:04,596 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2021-10-08 16:15:04,620 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 16:15:04,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:04,797 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash -376326964, now seen corresponding path program 30 times [2021-10-08 16:15:04,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:04,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216788097] [2021-10-08 16:15:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:04,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:05,268 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 16:15:05,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:05,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216788097] [2021-10-08 16:15:05,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216788097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:05,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338223696] [2021-10-08 16:15:05,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:05,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:05,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:05,271 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 16:15:05,272 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 16:15:05,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-08 16:15:05,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:05,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:15:05,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:05,628 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 16:15:05,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338223696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:05,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:05,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-08 16:15:05,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938761896] [2021-10-08 16:15:05,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 16:15:05,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:05,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 16:15:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:15:05,631 INFO L87 Difference]: Start difference. First operand 2112 states and 8184 transitions. Second operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 16:15:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:06,069 INFO L93 Difference]: Finished difference Result 4472 states and 17457 transitions. [2021-10-08 16:15:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:15:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 33 [2021-10-08 16:15:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:06,081 INFO L225 Difference]: With dead ends: 4472 [2021-10-08 16:15:06,081 INFO L226 Difference]: Without dead ends: 3852 [2021-10-08 16:15:06,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 390.1ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:15:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-10-08 16:15:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2172. [2021-10-08 16:15:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2157 states have (on average 3.9017153453871116) internal successors, (8416), 2171 states have internal predecessors, (8416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8416 transitions. [2021-10-08 16:15:06,131 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8416 transitions. Word has length 33 [2021-10-08 16:15:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:06,132 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 8416 transitions. [2021-10-08 16:15:06,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 16:15:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8416 transitions. [2021-10-08 16:15:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:15:06,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:06,136 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2021-10-08 16:15:06,159 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 16:15:06,336 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,SelfDestructingSolverStorable47 [2021-10-08 16:15:06,337 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1218766465, now seen corresponding path program 31 times [2021-10-08 16:15:06,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:06,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236489621] [2021-10-08 16:15:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:06,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:06,850 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 16:15:06,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:06,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236489621] [2021-10-08 16:15:06,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236489621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:06,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988665065] [2021-10-08 16:15:06,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:06,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:06,852 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 16:15:06,853 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 16:15:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:07,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:15:07,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:07,204 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 16:15:07,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988665065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:07,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:07,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-08 16:15:07,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089120400] [2021-10-08 16:15:07,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:15:07,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:15:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:15:07,206 INFO L87 Difference]: Start difference. First operand 2172 states and 8416 transitions. Second operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 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 16:15:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:07,685 INFO L93 Difference]: Finished difference Result 4608 states and 17990 transitions. [2021-10-08 16:15:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:15:07,685 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 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 34 [2021-10-08 16:15:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:07,698 INFO L225 Difference]: With dead ends: 4608 [2021-10-08 16:15:07,698 INFO L226 Difference]: Without dead ends: 3968 [2021-10-08 16:15:07,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 426.2ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:15:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-08 16:15:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2232. [2021-10-08 16:15:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2217 states have (on average 3.900766801984664) internal successors, (8648), 2231 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 8648 transitions. [2021-10-08 16:15:07,768 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 8648 transitions. Word has length 34 [2021-10-08 16:15:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 8648 transitions. [2021-10-08 16:15:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 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 16:15:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 8648 transitions. [2021-10-08 16:15:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:15:07,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:07,773 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2021-10-08 16:15:07,796 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 16:15:07,973 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,SelfDestructingSolverStorable48 [2021-10-08 16:15:07,974 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:07,974 INFO L82 PathProgramCache]: Analyzing trace with hash -872944788, now seen corresponding path program 32 times [2021-10-08 16:15:07,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:07,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269448100] [2021-10-08 16:15:07,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:07,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:08,526 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 16:15:08,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:08,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269448100] [2021-10-08 16:15:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269448100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:08,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003827187] [2021-10-08 16:15:08,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:08,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:08,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:08,531 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 16:15:08,549 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 16:15:08,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:08,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:08,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:15:08,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:08,933 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 16:15:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003827187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:08,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:08,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-08 16:15:08,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999961322] [2021-10-08 16:15:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:15:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:15:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:15:08,935 INFO L87 Difference]: Start difference. First operand 2232 states and 8648 transitions. Second operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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 16:15:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:09,452 INFO L93 Difference]: Finished difference Result 4744 states and 18523 transitions. [2021-10-08 16:15:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:15:09,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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 35 [2021-10-08 16:15:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:09,468 INFO L225 Difference]: With dead ends: 4744 [2021-10-08 16:15:09,469 INFO L226 Difference]: Without dead ends: 4084 [2021-10-08 16:15:09,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 467.6ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:15:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-10-08 16:15:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2292. [2021-10-08 16:15:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2277 states have (on average 3.8998682476943345) internal successors, (8880), 2291 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 8880 transitions. [2021-10-08 16:15:09,536 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 8880 transitions. Word has length 35 [2021-10-08 16:15:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:09,537 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 8880 transitions. [2021-10-08 16:15:09,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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 16:15:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 8880 transitions. [2021-10-08 16:15:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-08 16:15:09,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:09,541 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2021-10-08 16:15:09,566 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 16:15:09,742 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,SelfDestructingSolverStorable49 [2021-10-08 16:15:09,742 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:09,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1291484191, now seen corresponding path program 33 times [2021-10-08 16:15:09,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:09,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632873724] [2021-10-08 16:15:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:09,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:10,353 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 16:15:10,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:10,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632873724] [2021-10-08 16:15:10,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632873724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:10,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299138780] [2021-10-08 16:15:10,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:10,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:10,355 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 16:15:10,356 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 16:15:10,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-08 16:15:10,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:10,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:15:10,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:10,780 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 16:15:10,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299138780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:10,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:10,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-08 16:15:10,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976328571] [2021-10-08 16:15:10,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-08 16:15:10,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-08 16:15:10,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:15:10,783 INFO L87 Difference]: Start difference. First operand 2292 states and 8880 transitions. Second operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 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 16:15:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:11,331 INFO L93 Difference]: Finished difference Result 4880 states and 19056 transitions. [2021-10-08 16:15:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:15:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 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 36 [2021-10-08 16:15:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:11,347 INFO L225 Difference]: With dead ends: 4880 [2021-10-08 16:15:11,347 INFO L226 Difference]: Without dead ends: 4200 [2021-10-08 16:15:11,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 514.8ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:15:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-10-08 16:15:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2352. [2021-10-08 16:15:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2337 states have (on average 3.899015832263586) internal successors, (9112), 2351 states have internal predecessors, (9112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 9112 transitions. [2021-10-08 16:15:11,425 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 9112 transitions. Word has length 36 [2021-10-08 16:15:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:11,425 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 9112 transitions. [2021-10-08 16:15:11,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 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 16:15:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 9112 transitions. [2021-10-08 16:15:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 16:15:11,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:11,430 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2021-10-08 16:15:11,456 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 16:15:11,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:11,639 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1381303796, now seen corresponding path program 34 times [2021-10-08 16:15:11,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:11,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944359491] [2021-10-08 16:15:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:11,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:12,254 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 16:15:12,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:12,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944359491] [2021-10-08 16:15:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944359491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:12,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760735797] [2021-10-08 16:15:12,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:12,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:12,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:12,257 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 16:15:12,259 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 16:15:12,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:12,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:12,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:15:12,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:12,674 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 16:15:12,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760735797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:12,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:12,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-08 16:15:12,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305345751] [2021-10-08 16:15:12,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:15:12,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:15:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:15:12,676 INFO L87 Difference]: Start difference. First operand 2352 states and 9112 transitions. Second operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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 16:15:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:13,309 INFO L93 Difference]: Finished difference Result 5016 states and 19589 transitions. [2021-10-08 16:15:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:15:13,310 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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 37 [2021-10-08 16:15:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:13,324 INFO L225 Difference]: With dead ends: 5016 [2021-10-08 16:15:13,324 INFO L226 Difference]: Without dead ends: 4316 [2021-10-08 16:15:13,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 512.7ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:15:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-08 16:15:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2412. [2021-10-08 16:15:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2397 states have (on average 3.898206090947017) internal successors, (9344), 2411 states have internal predecessors, (9344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 9344 transitions. [2021-10-08 16:15:13,437 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 9344 transitions. Word has length 37 [2021-10-08 16:15:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:13,437 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 9344 transitions. [2021-10-08 16:15:13,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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 16:15:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 9344 transitions. [2021-10-08 16:15:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:15:13,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:13,442 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2021-10-08 16:15:13,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:13,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:13,643 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash 129255745, now seen corresponding path program 35 times [2021-10-08 16:15:13,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:13,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571660700] [2021-10-08 16:15:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:13,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:14,307 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 16:15:14,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571660700] [2021-10-08 16:15:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571660700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425848064] [2021-10-08 16:15:14,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:14,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:14,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:14,310 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 16:15:14,311 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 16:15:14,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-08 16:15:14,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:14,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:15:14,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:14,760 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 16:15:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425848064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:14,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:14,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-08 16:15:14,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235228127] [2021-10-08 16:15:14,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:15:14,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:15:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:15:14,763 INFO L87 Difference]: Start difference. First operand 2412 states and 9344 transitions. Second operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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 16:15:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:15,330 INFO L93 Difference]: Finished difference Result 5152 states and 20122 transitions. [2021-10-08 16:15:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:15:15,330 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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 38 [2021-10-08 16:15:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:15,344 INFO L225 Difference]: With dead ends: 5152 [2021-10-08 16:15:15,344 INFO L226 Difference]: Without dead ends: 4432 [2021-10-08 16:15:15,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 568.6ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:15:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-10-08 16:15:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 2472. [2021-10-08 16:15:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2457 states have (on average 3.8974358974358974) internal successors, (9576), 2471 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 9576 transitions. [2021-10-08 16:15:15,407 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 9576 transitions. Word has length 38 [2021-10-08 16:15:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:15,407 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 9576 transitions. [2021-10-08 16:15:15,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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 16:15:15,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 9576 transitions. [2021-10-08 16:15:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 16:15:15,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:15,412 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2021-10-08 16:15:15,436 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 16:15:15,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:15,613 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:15,614 INFO L82 PathProgramCache]: Analyzing trace with hash -288038740, now seen corresponding path program 36 times [2021-10-08 16:15:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247437735] [2021-10-08 16:15:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:15,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:16,290 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 16:15:16,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:16,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247437735] [2021-10-08 16:15:16,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247437735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:16,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636124079] [2021-10-08 16:15:16,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:16,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:16,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:16,292 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 16:15:16,293 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 16:15:16,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-08 16:15:16,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:16,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:15:16,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:16,742 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 16:15:16,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636124079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:16,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:16,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-08 16:15:16,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521106701] [2021-10-08 16:15:16,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:15:16,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:15:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:15:16,745 INFO L87 Difference]: Start difference. First operand 2472 states and 9576 transitions. Second operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 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 16:15:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:17,334 INFO L93 Difference]: Finished difference Result 5288 states and 20655 transitions. [2021-10-08 16:15:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:15:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 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 39 [2021-10-08 16:15:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:17,348 INFO L225 Difference]: With dead ends: 5288 [2021-10-08 16:15:17,349 INFO L226 Difference]: Without dead ends: 4548 [2021-10-08 16:15:17,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 584.6ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:15:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-10-08 16:15:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 2532. [2021-10-08 16:15:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2517 states have (on average 3.8967024235200634) internal successors, (9808), 2531 states have internal predecessors, (9808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 9808 transitions. [2021-10-08 16:15:17,414 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 9808 transitions. Word has length 39 [2021-10-08 16:15:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:17,414 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 9808 transitions. [2021-10-08 16:15:17,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 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 16:15:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 9808 transitions. [2021-10-08 16:15:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:15:17,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:17,419 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2021-10-08 16:15:17,443 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 16:15:17,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-08 16:15:17,620 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash -339265887, now seen corresponding path program 37 times [2021-10-08 16:15:17,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:17,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416072478] [2021-10-08 16:15:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:17,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:18,315 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 16:15:18,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:18,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416072478] [2021-10-08 16:15:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416072478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:18,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291819784] [2021-10-08 16:15:18,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:18,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:18,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:18,318 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 16:15:18,335 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 16:15:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:18,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:15:18,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:18,764 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 16:15:18,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291819784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:18,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:18,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-08 16:15:18,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300036126] [2021-10-08 16:15:18,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:15:18,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:15:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:15:18,767 INFO L87 Difference]: Start difference. First operand 2532 states and 9808 transitions. Second operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 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 16:15:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:19,398 INFO L93 Difference]: Finished difference Result 5424 states and 21188 transitions. [2021-10-08 16:15:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 16:15:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 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 40 [2021-10-08 16:15:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:19,414 INFO L225 Difference]: With dead ends: 5424 [2021-10-08 16:15:19,414 INFO L226 Difference]: Without dead ends: 4664 [2021-10-08 16:15:19,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 593.8ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:15:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-10-08 16:15:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 2592. [2021-10-08 16:15:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2577 states have (on average 3.8960031043849437) internal successors, (10040), 2591 states have internal predecessors, (10040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 10040 transitions. [2021-10-08 16:15:19,482 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 10040 transitions. Word has length 40 [2021-10-08 16:15:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:19,482 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 10040 transitions. [2021-10-08 16:15:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 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 16:15:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 10040 transitions. [2021-10-08 16:15:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-08 16:15:19,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:19,488 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2021-10-08 16:15:19,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:19,688 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,SelfDestructingSolverStorable54 [2021-10-08 16:15:19,689 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1927307444, now seen corresponding path program 38 times [2021-10-08 16:15:19,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:19,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561021989] [2021-10-08 16:15:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:19,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:20,395 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 16:15:20,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:20,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561021989] [2021-10-08 16:15:20,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561021989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:20,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386128420] [2021-10-08 16:15:20,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:20,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:20,398 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 16:15:20,399 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 16:15:20,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:20,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:20,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:15:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:20,880 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 16:15:20,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386128420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:20,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:20,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-08 16:15:20,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134610679] [2021-10-08 16:15:20,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-08 16:15:20,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:20,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-08 16:15:20,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:15:20,882 INFO L87 Difference]: Start difference. First operand 2592 states and 10040 transitions. Second operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 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 16:15:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:21,561 INFO L93 Difference]: Finished difference Result 5560 states and 21721 transitions. [2021-10-08 16:15:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:15:21,562 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 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 41 [2021-10-08 16:15:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:21,576 INFO L225 Difference]: With dead ends: 5560 [2021-10-08 16:15:21,576 INFO L226 Difference]: Without dead ends: 4780 [2021-10-08 16:15:21,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 614.9ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:15:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2021-10-08 16:15:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 2652. [2021-10-08 16:15:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2637 states have (on average 3.8953356086461888) internal successors, (10272), 2651 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 10272 transitions. [2021-10-08 16:15:21,639 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 10272 transitions. Word has length 41 [2021-10-08 16:15:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:21,639 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 10272 transitions. [2021-10-08 16:15:21,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 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 16:15:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 10272 transitions. [2021-10-08 16:15:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 16:15:21,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:21,644 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2021-10-08 16:15:21,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-08 16:15:21,844 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,SelfDestructingSolverStorable55 [2021-10-08 16:15:21,845 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash 383011841, now seen corresponding path program 39 times [2021-10-08 16:15:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:21,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367440641] [2021-10-08 16:15:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:21,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:22,525 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 16:15:22,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:22,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367440641] [2021-10-08 16:15:22,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367440641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:22,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629731926] [2021-10-08 16:15:22,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:22,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:22,529 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 16:15:22,530 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 16:15:22,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-08 16:15:22,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:15:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:23,033 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 16:15:23,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629731926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:23,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:23,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-08 16:15:23,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203603000] [2021-10-08 16:15:23,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:15:23,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:15:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:15:23,035 INFO L87 Difference]: Start difference. First operand 2652 states and 10272 transitions. Second operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 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 16:15:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:23,721 INFO L93 Difference]: Finished difference Result 5696 states and 22254 transitions. [2021-10-08 16:15:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 16:15:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 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 42 [2021-10-08 16:15:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:23,737 INFO L225 Difference]: With dead ends: 5696 [2021-10-08 16:15:23,737 INFO L226 Difference]: Without dead ends: 4896 [2021-10-08 16:15:23,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 587.0ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:15:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2021-10-08 16:15:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 2712. [2021-10-08 16:15:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2697 states have (on average 3.8946978123841305) internal successors, (10504), 2711 states have internal predecessors, (10504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 10504 transitions. [2021-10-08 16:15:23,806 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 10504 transitions. Word has length 42 [2021-10-08 16:15:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:23,806 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 10504 transitions. [2021-10-08 16:15:23,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 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 16:15:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 10504 transitions. [2021-10-08 16:15:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:15:23,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:23,813 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2021-10-08 16:15:23,837 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 16:15:24,013 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,SelfDestructingSolverStorable56 [2021-10-08 16:15:24,014 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1011534356, now seen corresponding path program 40 times [2021-10-08 16:15:24,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:24,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275073069] [2021-10-08 16:15:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:24,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:24,837 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 16:15:24,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:24,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275073069] [2021-10-08 16:15:24,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275073069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:24,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397292782] [2021-10-08 16:15:24,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:24,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:24,845 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 16:15:24,849 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 16:15:25,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:25,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:25,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:15:25,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:25,346 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 16:15:25,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397292782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:25,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:25,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-08 16:15:25,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639580691] [2021-10-08 16:15:25,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 16:15:25,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:25,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 16:15:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:15:25,349 INFO L87 Difference]: Start difference. First operand 2712 states and 10504 transitions. Second operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 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 16:15:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:26,170 INFO L93 Difference]: Finished difference Result 5832 states and 22787 transitions. [2021-10-08 16:15:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:15:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 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 43 [2021-10-08 16:15:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:26,186 INFO L225 Difference]: With dead ends: 5832 [2021-10-08 16:15:26,187 INFO L226 Difference]: Without dead ends: 5012 [2021-10-08 16:15:26,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 714.6ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:15:26,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-10-08 16:15:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2772. [2021-10-08 16:15:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2757 states have (on average 3.894087776568734) internal successors, (10736), 2771 states have internal predecessors, (10736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 10736 transitions. [2021-10-08 16:15:26,265 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 10736 transitions. Word has length 43 [2021-10-08 16:15:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:26,265 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 10736 transitions. [2021-10-08 16:15:26,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 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 16:15:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 10736 transitions. [2021-10-08 16:15:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:15:26,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:26,273 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2021-10-08 16:15:26,303 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 16:15:26,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:26,489 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1292793503, now seen corresponding path program 41 times [2021-10-08 16:15:26,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:26,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551913696] [2021-10-08 16:15:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:26,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:27,343 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 16:15:27,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:27,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551913696] [2021-10-08 16:15:27,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551913696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:27,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328184771] [2021-10-08 16:15:27,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:27,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:27,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:27,346 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 16:15:27,347 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 16:15:27,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-08 16:15:27,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:27,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:15:27,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:27,871 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 16:15:27,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328184771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:27,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:27,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-08 16:15:27,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102093357] [2021-10-08 16:15:27,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-08 16:15:27,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-08 16:15:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:15:27,874 INFO L87 Difference]: Start difference. First operand 2772 states and 10736 transitions. Second operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 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 16:15:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:28,676 INFO L93 Difference]: Finished difference Result 5968 states and 23320 transitions. [2021-10-08 16:15:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:15:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 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 44 [2021-10-08 16:15:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:28,694 INFO L225 Difference]: With dead ends: 5968 [2021-10-08 16:15:28,695 INFO L226 Difference]: Without dead ends: 5128 [2021-10-08 16:15:28,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 753.4ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:15:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2021-10-08 16:15:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 2832. [2021-10-08 16:15:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2817 states have (on average 3.893503727369542) internal successors, (10968), 2831 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 10968 transitions. [2021-10-08 16:15:28,772 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 10968 transitions. Word has length 44 [2021-10-08 16:15:28,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:28,773 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 10968 transitions. [2021-10-08 16:15:28,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 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 16:15:28,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 10968 transitions. [2021-10-08 16:15:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-08 16:15:28,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:28,778 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2021-10-08 16:15:28,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-08 16:15:28,979 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,SelfDestructingSolverStorable58 [2021-10-08 16:15:28,979 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1421892468, now seen corresponding path program 42 times [2021-10-08 16:15:28,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:28,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060935173] [2021-10-08 16:15:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:28,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:29,896 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 16:15:29,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:29,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060935173] [2021-10-08 16:15:29,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060935173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:29,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711331914] [2021-10-08 16:15:29,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:29,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:29,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:29,899 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 16:15:29,916 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 16:15:30,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-08 16:15:30,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:30,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:15:30,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:30,418 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 16:15:30,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711331914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:30,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:30,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-08 16:15:30,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479187392] [2021-10-08 16:15:30,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-08 16:15:30,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-08 16:15:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:15:30,421 INFO L87 Difference]: Start difference. First operand 2832 states and 10968 transitions. Second operand has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 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 16:15:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:31,243 INFO L93 Difference]: Finished difference Result 6104 states and 23853 transitions. [2021-10-08 16:15:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:15:31,244 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 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 45 [2021-10-08 16:15:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:31,261 INFO L225 Difference]: With dead ends: 6104 [2021-10-08 16:15:31,261 INFO L226 Difference]: Without dead ends: 5244 [2021-10-08 16:15:31,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 813.4ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:15:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-10-08 16:15:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 2892. [2021-10-08 16:15:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2877 states have (on average 3.8929440389294405) internal successors, (11200), 2891 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 11200 transitions. [2021-10-08 16:15:31,336 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 11200 transitions. Word has length 45 [2021-10-08 16:15:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:31,336 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 11200 transitions. [2021-10-08 16:15:31,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 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 16:15:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 11200 transitions. [2021-10-08 16:15:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 16:15:31,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:31,342 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2021-10-08 16:15:31,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-08 16:15:31,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:31,556 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1128993087, now seen corresponding path program 43 times [2021-10-08 16:15:31,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:31,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408362162] [2021-10-08 16:15:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:31,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:32,441 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 16:15:32,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:32,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408362162] [2021-10-08 16:15:32,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408362162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:32,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371087957] [2021-10-08 16:15:32,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:32,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:32,443 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 16:15:32,464 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 16:15:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:32,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:15:32,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:33,044 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 16:15:33,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371087957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:33,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:33,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-08 16:15:33,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502085680] [2021-10-08 16:15:33,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:15:33,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:15:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:15:33,046 INFO L87 Difference]: Start difference. First operand 2892 states and 11200 transitions. Second operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 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 16:15:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:33,910 INFO L93 Difference]: Finished difference Result 6240 states and 24386 transitions. [2021-10-08 16:15:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 16:15:33,911 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 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 46 [2021-10-08 16:15:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:33,928 INFO L225 Difference]: With dead ends: 6240 [2021-10-08 16:15:33,928 INFO L226 Difference]: Without dead ends: 5360 [2021-10-08 16:15:33,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 777.1ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:15:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-10-08 16:15:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2952. [2021-10-08 16:15:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2937 states have (on average 3.892407218249915) internal successors, (11432), 2951 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 11432 transitions. [2021-10-08 16:15:34,010 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 11432 transitions. Word has length 46 [2021-10-08 16:15:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:34,010 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 11432 transitions. [2021-10-08 16:15:34,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 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 16:15:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 11432 transitions. [2021-10-08 16:15:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:15:34,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:34,016 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2021-10-08 16:15:34,039 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 16:15:34,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:34,217 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash -639046868, now seen corresponding path program 44 times [2021-10-08 16:15:34,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:34,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991558635] [2021-10-08 16:15:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:34,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:35,184 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 16:15:35,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:35,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991558635] [2021-10-08 16:15:35,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991558635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:35,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904659452] [2021-10-08 16:15:35,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:35,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:35,186 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 16:15:35,187 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 16:15:35,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:35,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:35,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:15:35,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:35,766 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 16:15:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904659452] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:35,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-08 16:15:35,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167872631] [2021-10-08 16:15:35,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-08 16:15:35,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-08 16:15:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:15:35,769 INFO L87 Difference]: Start difference. First operand 2952 states and 11432 transitions. Second operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 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 16:15:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:36,793 INFO L93 Difference]: Finished difference Result 6376 states and 24919 transitions. [2021-10-08 16:15:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:15:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 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 47 [2021-10-08 16:15:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:36,817 INFO L225 Difference]: With dead ends: 6376 [2021-10-08 16:15:36,817 INFO L226 Difference]: Without dead ends: 5476 [2021-10-08 16:15:36,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 862.4ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:15:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-10-08 16:15:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3012. [2021-10-08 16:15:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2997 states have (on average 3.891891891891892) internal successors, (11664), 3011 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 11664 transitions. [2021-10-08 16:15:36,908 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 11664 transitions. Word has length 47 [2021-10-08 16:15:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:36,908 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 11664 transitions. [2021-10-08 16:15:36,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 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 16:15:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 11664 transitions. [2021-10-08 16:15:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 16:15:36,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:36,915 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2021-10-08 16:15:36,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:37,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:37,122 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:37,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1664384033, now seen corresponding path program 45 times [2021-10-08 16:15:37,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:37,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703664230] [2021-10-08 16:15:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:37,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:38,123 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 16:15:38,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:38,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703664230] [2021-10-08 16:15:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703664230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:38,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403098432] [2021-10-08 16:15:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:38,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:38,126 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 16:15:38,127 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 16:15:38,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-08 16:15:38,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:15:38,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:38,766 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 16:15:38,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403098432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:38,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-08 16:15:38,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913959879] [2021-10-08 16:15:38,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-08 16:15:38,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-08 16:15:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:15:38,769 INFO L87 Difference]: Start difference. First operand 3012 states and 11664 transitions. Second operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 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 16:15:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:39,758 INFO L93 Difference]: Finished difference Result 6512 states and 25452 transitions. [2021-10-08 16:15:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:15:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 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 48 [2021-10-08 16:15:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:39,778 INFO L225 Difference]: With dead ends: 6512 [2021-10-08 16:15:39,778 INFO L226 Difference]: Without dead ends: 5592 [2021-10-08 16:15:39,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 887.3ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:15:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-08 16:15:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 3072. [2021-10-08 16:15:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3057 states have (on average 3.8913967942427217) internal successors, (11896), 3071 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 11896 transitions. [2021-10-08 16:15:39,860 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 11896 transitions. Word has length 48 [2021-10-08 16:15:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:39,860 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 11896 transitions. [2021-10-08 16:15:39,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 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 16:15:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 11896 transitions. [2021-10-08 16:15:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-08 16:15:39,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:39,866 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2021-10-08 16:15:39,891 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 16:15:40,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:40,067 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:40,068 INFO L82 PathProgramCache]: Analyzing trace with hash 56297932, now seen corresponding path program 46 times [2021-10-08 16:15:40,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:40,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916722618] [2021-10-08 16:15:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:40,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:41,154 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 16:15:41,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:41,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916722618] [2021-10-08 16:15:41,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916722618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:41,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439748329] [2021-10-08 16:15:41,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:41,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:41,157 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 16:15:41,158 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 16:15:41,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:41,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:41,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:15:41,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:41,777 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 16:15:41,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439748329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:41,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:41,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-08 16:15:41,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276297731] [2021-10-08 16:15:41,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-08 16:15:41,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-08 16:15:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:15:41,781 INFO L87 Difference]: Start difference. First operand 3072 states and 11896 transitions. Second operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 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 16:15:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:42,850 INFO L93 Difference]: Finished difference Result 6648 states and 25985 transitions. [2021-10-08 16:15:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:15:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 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 49 [2021-10-08 16:15:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:42,869 INFO L225 Difference]: With dead ends: 6648 [2021-10-08 16:15:42,869 INFO L226 Difference]: Without dead ends: 5708 [2021-10-08 16:15:42,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 951.0ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:15:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-10-08 16:15:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 3132. [2021-10-08 16:15:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3117 states have (on average 3.890920757138274) internal successors, (12128), 3131 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 12128 transitions. [2021-10-08 16:15:42,957 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 12128 transitions. Word has length 49 [2021-10-08 16:15:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:42,958 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 12128 transitions. [2021-10-08 16:15:42,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 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 16:15:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 12128 transitions. [2021-10-08 16:15:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 16:15:42,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:42,965 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2021-10-08 16:15:42,991 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 16:15:43,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:43,166 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:43,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1745236353, now seen corresponding path program 47 times [2021-10-08 16:15:43,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:43,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372404491] [2021-10-08 16:15:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:43,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:44,265 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 16:15:44,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:44,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372404491] [2021-10-08 16:15:44,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372404491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:44,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958002355] [2021-10-08 16:15:44,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:44,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:44,267 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 16:15:44,269 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 16:15:44,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-08 16:15:44,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:44,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:15:44,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:44,898 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 16:15:44,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958002355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:44,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:44,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-08 16:15:44,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922530492] [2021-10-08 16:15:44,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:15:44,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:15:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:15:44,901 INFO L87 Difference]: Start difference. First operand 3132 states and 12128 transitions. Second operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 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 16:15:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:45,966 INFO L93 Difference]: Finished difference Result 6784 states and 26518 transitions. [2021-10-08 16:15:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 16:15:45,967 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 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 50 [2021-10-08 16:15:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:45,986 INFO L225 Difference]: With dead ends: 6784 [2021-10-08 16:15:45,987 INFO L226 Difference]: Without dead ends: 5824 [2021-10-08 16:15:45,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 983.8ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:15:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-10-08 16:15:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3192. [2021-10-08 16:15:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3177 states have (on average 3.890462700661001) internal successors, (12360), 3191 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 12360 transitions. [2021-10-08 16:15:46,077 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 12360 transitions. Word has length 50 [2021-10-08 16:15:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:46,078 INFO L470 AbstractCegarLoop]: Abstraction has 3192 states and 12360 transitions. [2021-10-08 16:15:46,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 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 16:15:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 12360 transitions. [2021-10-08 16:15:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:15:46,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:46,085 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2021-10-08 16:15:46,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:46,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:46,286 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1732247444, now seen corresponding path program 48 times [2021-10-08 16:15:46,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:46,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243028657] [2021-10-08 16:15:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:46,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:47,367 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 16:15:47,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:47,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243028657] [2021-10-08 16:15:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243028657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:47,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572093111] [2021-10-08 16:15:47,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:47,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:47,370 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 16:15:47,371 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 16:15:47,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-08 16:15:47,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:47,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:15:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:48,041 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 16:15:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572093111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:48,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-08 16:15:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860070748] [2021-10-08 16:15:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-08 16:15:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-08 16:15:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:15:48,044 INFO L87 Difference]: Start difference. First operand 3192 states and 12360 transitions. Second operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 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 16:15:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:49,229 INFO L93 Difference]: Finished difference Result 6920 states and 27051 transitions. [2021-10-08 16:15:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 16:15:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 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 51 [2021-10-08 16:15:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:49,250 INFO L225 Difference]: With dead ends: 6920 [2021-10-08 16:15:49,250 INFO L226 Difference]: Without dead ends: 5940 [2021-10-08 16:15:49,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 964.4ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:15:49,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2021-10-08 16:15:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 3252. [2021-10-08 16:15:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3237 states have (on average 3.890021624961384) internal successors, (12592), 3251 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 12592 transitions. [2021-10-08 16:15:49,403 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 12592 transitions. Word has length 51 [2021-10-08 16:15:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:49,403 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 12592 transitions. [2021-10-08 16:15:49,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 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 16:15:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 12592 transitions. [2021-10-08 16:15:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:15:49,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:49,411 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2021-10-08 16:15:49,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:49,611 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,SelfDestructingSolverStorable65 [2021-10-08 16:15:49,612 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2134904545, now seen corresponding path program 49 times [2021-10-08 16:15:49,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:49,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305254423] [2021-10-08 16:15:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:49,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:50,761 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 16:15:50,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:50,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305254423] [2021-10-08 16:15:50,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305254423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:50,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104740166] [2021-10-08 16:15:50,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:50,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:50,764 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 16:15:50,767 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 16:15:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:51,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-08 16:15:51,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:51,427 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 16:15:51,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104740166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:51,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:51,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-08 16:15:51,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754006597] [2021-10-08 16:15:51,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-08 16:15:51,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-08 16:15:51,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:15:51,430 INFO L87 Difference]: Start difference. First operand 3252 states and 12592 transitions. Second operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 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 16:15:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:52,593 INFO L93 Difference]: Finished difference Result 7056 states and 27584 transitions. [2021-10-08 16:15:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 16:15:52,594 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 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 52 [2021-10-08 16:15:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:52,613 INFO L225 Difference]: With dead ends: 7056 [2021-10-08 16:15:52,613 INFO L226 Difference]: Without dead ends: 6056 [2021-10-08 16:15:52,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1025.1ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:15:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-08 16:15:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 3312. [2021-10-08 16:15:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 3297 states have (on average 3.889596602972399) internal successors, (12824), 3311 states have internal predecessors, (12824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 12824 transitions. [2021-10-08 16:15:52,708 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 12824 transitions. Word has length 52 [2021-10-08 16:15:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:52,708 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 12824 transitions. [2021-10-08 16:15:52,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 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 16:15:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 12824 transitions. [2021-10-08 16:15:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-08 16:15:52,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:52,715 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2021-10-08 16:15:52,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:52,916 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1757531916, now seen corresponding path program 50 times [2021-10-08 16:15:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103908324] [2021-10-08 16:15:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:52,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:54,087 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 16:15:54,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:54,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103908324] [2021-10-08 16:15:54,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103908324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:54,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409097979] [2021-10-08 16:15:54,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:54,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:54,126 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 16:15:54,127 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 16:15:54,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:54,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:54,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:15:54,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:54,806 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 16:15:54,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409097979] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:54,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:54,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-08 16:15:54,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401484724] [2021-10-08 16:15:54,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-08 16:15:54,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-08 16:15:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:15:54,809 INFO L87 Difference]: Start difference. First operand 3312 states and 12824 transitions. Second operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 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 16:15:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:56,000 INFO L93 Difference]: Finished difference Result 7192 states and 28117 transitions. [2021-10-08 16:15:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:15:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 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 53 [2021-10-08 16:15:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:56,021 INFO L225 Difference]: With dead ends: 7192 [2021-10-08 16:15:56,021 INFO L226 Difference]: Without dead ends: 6172 [2021-10-08 16:15:56,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1044.8ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:15:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-10-08 16:15:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 3372. [2021-10-08 16:15:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3357 states have (on average 3.8891867739052723) internal successors, (13056), 3371 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 13056 transitions. [2021-10-08 16:15:56,123 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 13056 transitions. Word has length 53 [2021-10-08 16:15:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:56,123 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 13056 transitions. [2021-10-08 16:15:56,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 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 16:15:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 13056 transitions. [2021-10-08 16:15:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 16:15:56,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:56,129 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2021-10-08 16:15:56,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:56,330 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,SelfDestructingSolverStorable67 [2021-10-08 16:15:56,331 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:15:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1351084991, now seen corresponding path program 51 times [2021-10-08 16:15:56,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:56,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271841883] [2021-10-08 16:15:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:56,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:57,615 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 16:15:57,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:57,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271841883] [2021-10-08 16:15:57,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271841883] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:57,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323779065] [2021-10-08 16:15:57,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:57,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:57,618 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 16:15:57,619 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 16:15:58,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-08 16:15:58,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-08 16:15:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:58,354 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 16:15:58,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323779065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:58,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:58,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-08 16:15:58,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862221980] [2021-10-08 16:15:58,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:15:58,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:15:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:15:58,357 INFO L87 Difference]: Start difference. First operand 3372 states and 13056 transitions. Second operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 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 16:15:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:59,858 INFO L93 Difference]: Finished difference Result 7328 states and 28650 transitions. [2021-10-08 16:15:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 16:15:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 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 54 [2021-10-08 16:15:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:59,879 INFO L225 Difference]: With dead ends: 7328 [2021-10-08 16:15:59,879 INFO L226 Difference]: Without dead ends: 6288 [2021-10-08 16:15:59,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1152.1ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:15:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-08 16:15:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 3432. [2021-10-08 16:15:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 3417 states have (on average 3.8887913374304945) internal successors, (13288), 3431 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 13288 transitions. [2021-10-08 16:15:59,969 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 13288 transitions. Word has length 54 [2021-10-08 16:15:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:59,969 INFO L470 AbstractCegarLoop]: Abstraction has 3432 states and 13288 transitions. [2021-10-08 16:15:59,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 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 16:15:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 13288 transitions. [2021-10-08 16:15:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-08 16:15:59,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:59,975 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2021-10-08 16:15:59,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:00,175 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,SelfDestructingSolverStorable68 [2021-10-08 16:16:00,176 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1066038700, now seen corresponding path program 52 times [2021-10-08 16:16:00,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:00,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800159054] [2021-10-08 16:16:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:00,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:01,488 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 16:16:01,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:01,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800159054] [2021-10-08 16:16:01,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800159054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:01,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256903909] [2021-10-08 16:16:01,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:16:01,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:01,491 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 16:16:01,493 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 16:16:02,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:16:02,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-08 16:16:02,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:02,217 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 16:16:02,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256903909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:02,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:02,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-08 16:16:02,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195928700] [2021-10-08 16:16:02,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-08 16:16:02,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-08 16:16:02,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:16:02,220 INFO L87 Difference]: Start difference. First operand 3432 states and 13288 transitions. Second operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 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 16:16:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:03,574 INFO L93 Difference]: Finished difference Result 7464 states and 29183 transitions. [2021-10-08 16:16:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 16:16:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 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 55 [2021-10-08 16:16:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:03,598 INFO L225 Difference]: With dead ends: 7464 [2021-10-08 16:16:03,598 INFO L226 Difference]: Without dead ends: 6404 [2021-10-08 16:16:03,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1178.6ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:16:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-08 16:16:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3492. [2021-10-08 16:16:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3477 states have (on average 3.888409548461317) internal successors, (13520), 3491 states have internal predecessors, (13520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 13520 transitions. [2021-10-08 16:16:03,701 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 13520 transitions. Word has length 55 [2021-10-08 16:16:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:03,701 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 13520 transitions. [2021-10-08 16:16:03,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 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 16:16:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 13520 transitions. [2021-10-08 16:16:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-08 16:16:03,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:03,708 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2021-10-08 16:16:03,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-08 16:16:03,908 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,SelfDestructingSolverStorable69 [2021-10-08 16:16:03,909 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1312538207, now seen corresponding path program 53 times [2021-10-08 16:16:03,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:03,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375297230] [2021-10-08 16:16:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:03,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:05,218 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 16:16:05,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:05,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375297230] [2021-10-08 16:16:05,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375297230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:05,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105588576] [2021-10-08 16:16:05,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:16:05,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:05,221 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 16:16:05,222 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 16:16:05,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-08 16:16:05,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:05,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:16:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:05,991 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 16:16:05,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105588576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:05,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:05,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-08 16:16:05,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694837731] [2021-10-08 16:16:05,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-08 16:16:05,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-08 16:16:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:16:05,994 INFO L87 Difference]: Start difference. First operand 3492 states and 13520 transitions. Second operand has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 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 16:16:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:07,358 INFO L93 Difference]: Finished difference Result 7600 states and 29716 transitions. [2021-10-08 16:16:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 16:16:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 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 56 [2021-10-08 16:16:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:07,379 INFO L225 Difference]: With dead ends: 7600 [2021-10-08 16:16:07,379 INFO L226 Difference]: Without dead ends: 6520 [2021-10-08 16:16:07,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1187.8ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:16:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-10-08 16:16:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3552. [2021-10-08 16:16:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3537 states have (on average 3.8880407124681935) internal successors, (13752), 3551 states have internal predecessors, (13752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 13752 transitions. [2021-10-08 16:16:07,466 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 13752 transitions. Word has length 56 [2021-10-08 16:16:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:07,466 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 13752 transitions. [2021-10-08 16:16:07,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 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 16:16:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 13752 transitions. [2021-10-08 16:16:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-08 16:16:07,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:07,472 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2021-10-08 16:16:07,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-08 16:16:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:07,673 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2033978292, now seen corresponding path program 54 times [2021-10-08 16:16:07,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:07,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295719626] [2021-10-08 16:16:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:07,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:09,061 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 16:16:09,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:09,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295719626] [2021-10-08 16:16:09,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295719626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:09,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416222790] [2021-10-08 16:16:09,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:16:09,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:09,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:09,064 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 16:16:09,065 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 16:16:09,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-08 16:16:09,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:09,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-08 16:16:09,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:09,866 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 16:16:09,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416222790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:09,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:09,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-08 16:16:09,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810444694] [2021-10-08 16:16:09,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-08 16:16:09,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-08 16:16:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:16:09,868 INFO L87 Difference]: Start difference. First operand 3552 states and 13752 transitions. Second operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 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 16:16:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:11,285 INFO L93 Difference]: Finished difference Result 7736 states and 30249 transitions. [2021-10-08 16:16:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 16:16:11,285 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 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 57 [2021-10-08 16:16:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:11,305 INFO L225 Difference]: With dead ends: 7736 [2021-10-08 16:16:11,306 INFO L226 Difference]: Without dead ends: 6636 [2021-10-08 16:16:11,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1255.1ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:16:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-10-08 16:16:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 3612. [2021-10-08 16:16:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3597 states have (on average 3.8876841812621628) internal successors, (13984), 3611 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 13984 transitions. [2021-10-08 16:16:11,397 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 13984 transitions. Word has length 57 [2021-10-08 16:16:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:11,397 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 13984 transitions. [2021-10-08 16:16:11,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 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 16:16:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 13984 transitions. [2021-10-08 16:16:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-08 16:16:11,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:11,403 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2021-10-08 16:16:11,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-08 16:16:11,609 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,SelfDestructingSolverStorable71 [2021-10-08 16:16:11,609 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1371182849, now seen corresponding path program 55 times [2021-10-08 16:16:11,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:11,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359737524] [2021-10-08 16:16:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:11,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:13,137 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 16:16:13,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:13,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359737524] [2021-10-08 16:16:13,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359737524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:13,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019539279] [2021-10-08 16:16:13,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:16:13,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:13,140 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 16:16:13,161 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 16:16:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:13,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-08 16:16:13,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:13,893 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 16:16:13,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019539279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:13,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:13,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-08 16:16:13,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413230055] [2021-10-08 16:16:13,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-08 16:16:13,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-08 16:16:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:16:13,897 INFO L87 Difference]: Start difference. First operand 3612 states and 13984 transitions. Second operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 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 16:16:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:15,420 INFO L93 Difference]: Finished difference Result 7872 states and 30782 transitions. [2021-10-08 16:16:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 16:16:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 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 58 [2021-10-08 16:16:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:15,441 INFO L225 Difference]: With dead ends: 7872 [2021-10-08 16:16:15,441 INFO L226 Difference]: Without dead ends: 6752 [2021-10-08 16:16:15,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1323.5ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:16:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2021-10-08 16:16:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 3672. [2021-10-08 16:16:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3657 states have (on average 3.887339349193328) internal successors, (14216), 3671 states have internal predecessors, (14216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 14216 transitions. [2021-10-08 16:16:15,537 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 14216 transitions. Word has length 58 [2021-10-08 16:16:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:15,537 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 14216 transitions. [2021-10-08 16:16:15,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 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 16:16:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 14216 transitions. [2021-10-08 16:16:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-08 16:16:15,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:15,544 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2021-10-08 16:16:15,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:15,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:15,745 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:15,746 INFO L82 PathProgramCache]: Analyzing trace with hash -443004180, now seen corresponding path program 56 times [2021-10-08 16:16:15,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:15,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188254708] [2021-10-08 16:16:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:15,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:17,259 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 16:16:17,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:17,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188254708] [2021-10-08 16:16:17,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188254708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:17,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586661714] [2021-10-08 16:16:17,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:17,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:17,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:17,266 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 16:16:17,266 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 16:16:17,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:17,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:17,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-08 16:16:17,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:18,109 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 16:16:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586661714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:18,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-08 16:16:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596607122] [2021-10-08 16:16:18,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-08 16:16:18,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-08 16:16:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:16:18,111 INFO L87 Difference]: Start difference. First operand 3672 states and 14216 transitions. Second operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 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 16:16:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:19,648 INFO L93 Difference]: Finished difference Result 8008 states and 31315 transitions. [2021-10-08 16:16:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 16:16:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 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 59 [2021-10-08 16:16:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:19,669 INFO L225 Difference]: With dead ends: 8008 [2021-10-08 16:16:19,670 INFO L226 Difference]: Without dead ends: 6868 [2021-10-08 16:16:19,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1379.1ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:16:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-10-08 16:16:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 3732. [2021-10-08 16:16:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3717 states have (on average 3.8870056497175143) internal successors, (14448), 3731 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 14448 transitions. [2021-10-08 16:16:19,766 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 14448 transitions. Word has length 59 [2021-10-08 16:16:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:19,766 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 14448 transitions. [2021-10-08 16:16:19,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 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 16:16:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 14448 transitions. [2021-10-08 16:16:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-08 16:16:19,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:19,773 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2021-10-08 16:16:19,798 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 16:16:19,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:19,974 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:19,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:19,974 INFO L82 PathProgramCache]: Analyzing trace with hash -848227231, now seen corresponding path program 57 times [2021-10-08 16:16:19,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:19,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126895729] [2021-10-08 16:16:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:19,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:21,610 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 16:16:21,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:21,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126895729] [2021-10-08 16:16:21,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126895729] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:21,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863599305] [2021-10-08 16:16:21,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:16:21,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:21,613 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 16:16:21,615 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 16:16:22,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-08 16:16:22,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:22,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-08 16:16:22,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:22,470 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 16:16:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863599305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:22,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:22,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-08 16:16:22,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511904026] [2021-10-08 16:16:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-08 16:16:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-08 16:16:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:16:22,473 INFO L87 Difference]: Start difference. First operand 3732 states and 14448 transitions. Second operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 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 16:16:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:24,370 INFO L93 Difference]: Finished difference Result 8144 states and 31848 transitions. [2021-10-08 16:16:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 16:16:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 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 60 [2021-10-08 16:16:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:24,394 INFO L225 Difference]: With dead ends: 8144 [2021-10-08 16:16:24,394 INFO L226 Difference]: Without dead ends: 6984 [2021-10-08 16:16:24,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1448.2ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:16:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2021-10-08 16:16:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 3792. [2021-10-08 16:16:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3777 states have (on average 3.8866825522901776) internal successors, (14680), 3791 states have internal predecessors, (14680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 14680 transitions. [2021-10-08 16:16:24,495 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 14680 transitions. Word has length 60 [2021-10-08 16:16:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:24,495 INFO L470 AbstractCegarLoop]: Abstraction has 3792 states and 14680 transitions. [2021-10-08 16:16:24,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 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 16:16:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 14680 transitions. [2021-10-08 16:16:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-08 16:16:24,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:24,502 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2021-10-08 16:16:24,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-08 16:16:24,703 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,SelfDestructingSolverStorable74 [2021-10-08 16:16:24,703 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:24,704 INFO L82 PathProgramCache]: Analyzing trace with hash -525239924, now seen corresponding path program 58 times [2021-10-08 16:16:24,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:24,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252395402] [2021-10-08 16:16:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:24,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:26,236 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 16:16:26,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:26,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252395402] [2021-10-08 16:16:26,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252395402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:26,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697892404] [2021-10-08 16:16:26,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:16:26,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:26,239 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 16:16:26,241 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 16:16:26,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:16:26,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:26,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-08 16:16:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:27,080 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 16:16:27,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697892404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:27,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:27,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-08 16:16:27,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133387284] [2021-10-08 16:16:27,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-08 16:16:27,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-08 16:16:27,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:16:27,084 INFO L87 Difference]: Start difference. First operand 3792 states and 14680 transitions. Second operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 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 16:16:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:28,992 INFO L93 Difference]: Finished difference Result 8280 states and 32381 transitions. [2021-10-08 16:16:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-08 16:16:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 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 61 [2021-10-08 16:16:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:29,014 INFO L225 Difference]: With dead ends: 8280 [2021-10-08 16:16:29,015 INFO L226 Difference]: Without dead ends: 7100 [2021-10-08 16:16:29,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1397.1ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:16:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-08 16:16:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 3852. [2021-10-08 16:16:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3837 states have (on average 3.886369559551733) internal successors, (14912), 3851 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 14912 transitions. [2021-10-08 16:16:29,113 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 14912 transitions. Word has length 61 [2021-10-08 16:16:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:29,113 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 14912 transitions. [2021-10-08 16:16:29,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 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 16:16:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 14912 transitions. [2021-10-08 16:16:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-08 16:16:29,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:29,120 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2021-10-08 16:16:29,147 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 16:16:29,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:29,321 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:29,322 INFO L82 PathProgramCache]: Analyzing trace with hash 897432001, now seen corresponding path program 59 times [2021-10-08 16:16:29,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:29,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096847767] [2021-10-08 16:16:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:29,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:31,032 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 16:16:31,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:31,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096847767] [2021-10-08 16:16:31,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096847767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:31,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237529477] [2021-10-08 16:16:31,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:16:31,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:31,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:31,034 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 16:16:31,035 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 16:16:31,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-08 16:16:31,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:31,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-08 16:16:31,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:31,923 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 16:16:31,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237529477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:31,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:31,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-08 16:16:31,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112871919] [2021-10-08 16:16:31,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-08 16:16:31,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-08 16:16:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:16:31,926 INFO L87 Difference]: Start difference. First operand 3852 states and 14912 transitions. Second operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 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 16:16:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:33,596 INFO L93 Difference]: Finished difference Result 8416 states and 32914 transitions. [2021-10-08 16:16:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 16:16:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 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 62 [2021-10-08 16:16:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:33,619 INFO L225 Difference]: With dead ends: 8416 [2021-10-08 16:16:33,619 INFO L226 Difference]: Without dead ends: 7216 [2021-10-08 16:16:33,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1568.5ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:16:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-10-08 16:16:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 3912. [2021-10-08 16:16:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3897 states have (on average 3.886066204772902) internal successors, (15144), 3911 states have internal predecessors, (15144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 15144 transitions. [2021-10-08 16:16:33,720 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 15144 transitions. Word has length 62 [2021-10-08 16:16:33,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:33,721 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 15144 transitions. [2021-10-08 16:16:33,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 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 16:16:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 15144 transitions. [2021-10-08 16:16:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-08 16:16:33,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:33,727 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2021-10-08 16:16:33,754 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 16:16:33,928 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,SelfDestructingSolverStorable76 [2021-10-08 16:16:33,928 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2050588716, now seen corresponding path program 60 times [2021-10-08 16:16:33,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:33,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859501378] [2021-10-08 16:16:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:33,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:35,651 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 16:16:35,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:35,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859501378] [2021-10-08 16:16:35,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859501378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:35,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533475474] [2021-10-08 16:16:35,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:16:35,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:35,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:35,654 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 16:16:35,655 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 16:16:36,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-08 16:16:36,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:36,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:16:36,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:36,585 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 16:16:36,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533475474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:36,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:36,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-08 16:16:36,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278297899] [2021-10-08 16:16:36,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-08 16:16:36,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:36,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-08 16:16:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:16:36,588 INFO L87 Difference]: Start difference. First operand 3912 states and 15144 transitions. Second operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 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 16:16:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:38,719 INFO L93 Difference]: Finished difference Result 8552 states and 33447 transitions. [2021-10-08 16:16:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 16:16:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 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 63 [2021-10-08 16:16:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:38,742 INFO L225 Difference]: With dead ends: 8552 [2021-10-08 16:16:38,742 INFO L226 Difference]: Without dead ends: 7332 [2021-10-08 16:16:38,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1582.7ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:16:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-08 16:16:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 3972. [2021-10-08 16:16:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3957 states have (on average 3.885772049532474) internal successors, (15376), 3971 states have internal predecessors, (15376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 15376 transitions. [2021-10-08 16:16:38,844 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 15376 transitions. Word has length 63 [2021-10-08 16:16:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:38,844 INFO L470 AbstractCegarLoop]: Abstraction has 3972 states and 15376 transitions. [2021-10-08 16:16:38,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 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 16:16:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 15376 transitions. [2021-10-08 16:16:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-08 16:16:38,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:38,852 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2021-10-08 16:16:38,882 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 16:16:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:39,053 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash -856258783, now seen corresponding path program 61 times [2021-10-08 16:16:39,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:39,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179020244] [2021-10-08 16:16:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:39,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:40,810 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 16:16:40,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:40,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179020244] [2021-10-08 16:16:40,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179020244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:40,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657561] [2021-10-08 16:16:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:16:40,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:40,812 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 16:16:40,813 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 16:16:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:41,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-08 16:16:41,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:41,700 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 16:16:41,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:41,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:41,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-08 16:16:41,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862696540] [2021-10-08 16:16:41,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-08 16:16:41,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-08 16:16:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:16:41,703 INFO L87 Difference]: Start difference. First operand 3972 states and 15376 transitions. Second operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 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 16:16:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:43,502 INFO L93 Difference]: Finished difference Result 8688 states and 33980 transitions. [2021-10-08 16:16:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 16:16:43,503 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 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 64 [2021-10-08 16:16:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:43,528 INFO L225 Difference]: With dead ends: 8688 [2021-10-08 16:16:43,528 INFO L226 Difference]: Without dead ends: 7448 [2021-10-08 16:16:43,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1604.6ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:16:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-10-08 16:16:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 4032. [2021-10-08 16:16:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4017 states have (on average 3.8854866816031866) internal successors, (15608), 4031 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 15608 transitions. [2021-10-08 16:16:43,633 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 15608 transitions. Word has length 64 [2021-10-08 16:16:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:43,633 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 15608 transitions. [2021-10-08 16:16:43,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 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 16:16:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 15608 transitions. [2021-10-08 16:16:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-08 16:16:43,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:43,641 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2021-10-08 16:16:43,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:43,842 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,SelfDestructingSolverStorable78 [2021-10-08 16:16:43,842 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash -774218036, now seen corresponding path program 62 times [2021-10-08 16:16:43,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:43,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387480337] [2021-10-08 16:16:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:43,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:45,623 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 16:16:45,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:45,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387480337] [2021-10-08 16:16:45,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387480337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:45,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201223105] [2021-10-08 16:16:45,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:45,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:45,627 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 16:16:45,628 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 16:16:46,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:46,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:46,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-08 16:16:46,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:46,537 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 16:16:46,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201223105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:46,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:46,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-08 16:16:46,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095183075] [2021-10-08 16:16:46,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-08 16:16:46,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-08 16:16:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:16:46,540 INFO L87 Difference]: Start difference. First operand 4032 states and 15608 transitions. Second operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 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 16:16:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:48,610 INFO L93 Difference]: Finished difference Result 8824 states and 34513 transitions. [2021-10-08 16:16:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 16:16:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 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 65 [2021-10-08 16:16:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:48,634 INFO L225 Difference]: With dead ends: 8824 [2021-10-08 16:16:48,635 INFO L226 Difference]: Without dead ends: 7564 [2021-10-08 16:16:48,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1633.5ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:16:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2021-10-08 16:16:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 4092. [2021-10-08 16:16:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4077 states have (on average 3.8852097130242824) internal successors, (15840), 4091 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 15840 transitions. [2021-10-08 16:16:48,765 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 15840 transitions. Word has length 65 [2021-10-08 16:16:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:48,765 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 15840 transitions. [2021-10-08 16:16:48,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 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 16:16:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 15840 transitions. [2021-10-08 16:16:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-08 16:16:48,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:48,775 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2021-10-08 16:16:48,807 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 16:16:48,988 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,SelfDestructingSolverStorable79 [2021-10-08 16:16:48,989 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:48,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1769045121, now seen corresponding path program 63 times [2021-10-08 16:16:48,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:48,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919589256] [2021-10-08 16:16:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:48,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:50,833 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 16:16:50,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:50,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919589256] [2021-10-08 16:16:50,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919589256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:50,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591703837] [2021-10-08 16:16:50,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:16:50,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:50,836 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 16:16:50,836 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 16:16:51,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-08 16:16:51,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:51,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-08 16:16:51,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:51,835 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 16:16:51,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591703837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:51,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:51,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-08 16:16:51,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781090439] [2021-10-08 16:16:51,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-08 16:16:51,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:51,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-08 16:16:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:16:51,838 INFO L87 Difference]: Start difference. First operand 4092 states and 15840 transitions. Second operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 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 16:16:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:53,942 INFO L93 Difference]: Finished difference Result 8960 states and 35046 transitions. [2021-10-08 16:16:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 16:16:53,942 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 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 66 [2021-10-08 16:16:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:53,971 INFO L225 Difference]: With dead ends: 8960 [2021-10-08 16:16:53,971 INFO L226 Difference]: Without dead ends: 7680 [2021-10-08 16:16:53,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1695.1ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:16:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2021-10-08 16:16:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 4152. [2021-10-08 16:16:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4137 states have (on average 3.8849407783417935) internal successors, (16072), 4151 states have internal predecessors, (16072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 16072 transitions. [2021-10-08 16:16:54,092 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 16072 transitions. Word has length 66 [2021-10-08 16:16:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:54,093 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 16072 transitions. [2021-10-08 16:16:54,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 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 16:16:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 16072 transitions. [2021-10-08 16:16:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-08 16:16:54,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:54,103 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2021-10-08 16:16:54,145 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 16:16:54,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:54,317 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:16:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash -994175636, now seen corresponding path program 64 times [2021-10-08 16:16:54,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364165415] [2021-10-08 16:16:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:54,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:56,223 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 16:16:56,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:56,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364165415] [2021-10-08 16:16:56,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364165415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:56,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759299104] [2021-10-08 16:16:56,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:16:56,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:56,225 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 16:16:56,226 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 16:16:57,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:16:57,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:57,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-08 16:16:57,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:57,254 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 16:16:57,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759299104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:57,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:57,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-08 16:16:57,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750861021] [2021-10-08 16:16:57,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-08 16:16:57,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-08 16:16:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:16:57,258 INFO L87 Difference]: Start difference. First operand 4152 states and 16072 transitions. Second operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 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 16:16:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:59,644 INFO L93 Difference]: Finished difference Result 9096 states and 35579 transitions. [2021-10-08 16:16:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 16:16:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 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 67 [2021-10-08 16:16:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:59,673 INFO L225 Difference]: With dead ends: 9096 [2021-10-08 16:16:59,673 INFO L226 Difference]: Without dead ends: 7796 [2021-10-08 16:16:59,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1751.4ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:16:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-10-08 16:16:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 4212. [2021-10-08 16:16:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4197 states have (on average 3.884679532999762) internal successors, (16304), 4211 states have internal predecessors, (16304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 16304 transitions. [2021-10-08 16:16:59,785 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 16304 transitions. Word has length 67 [2021-10-08 16:16:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:59,786 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 16304 transitions. [2021-10-08 16:16:59,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 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 16:16:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 16304 transitions. [2021-10-08 16:16:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-08 16:16:59,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:59,796 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2021-10-08 16:16:59,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:00,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:00,012 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:00,012 INFO L82 PathProgramCache]: Analyzing trace with hash -754673183, now seen corresponding path program 65 times [2021-10-08 16:17:00,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:00,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074603699] [2021-10-08 16:17:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:00,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:01,992 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 16:17:01,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:01,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074603699] [2021-10-08 16:17:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074603699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:01,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916950467] [2021-10-08 16:17:01,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:17:01,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:01,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:01,998 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 16:17:02,019 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 16:17:02,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-08 16:17:02,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:02,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-08 16:17:02,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:03,017 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 16:17:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916950467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:03,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-08 16:17:03,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123497510] [2021-10-08 16:17:03,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-08 16:17:03,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-08 16:17:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:17:03,021 INFO L87 Difference]: Start difference. First operand 4212 states and 16304 transitions. Second operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 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 16:17:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:05,232 INFO L93 Difference]: Finished difference Result 9232 states and 36112 transitions. [2021-10-08 16:17:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 16:17:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 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 68 [2021-10-08 16:17:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:05,331 INFO L225 Difference]: With dead ends: 9232 [2021-10-08 16:17:05,331 INFO L226 Difference]: Without dead ends: 7912 [2021-10-08 16:17:05,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1819.7ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:17:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-10-08 16:17:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4272. [2021-10-08 16:17:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4257 states have (on average 3.884425651867512) internal successors, (16536), 4271 states have internal predecessors, (16536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 16536 transitions. [2021-10-08 16:17:05,462 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 16536 transitions. Word has length 68 [2021-10-08 16:17:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:05,463 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 16536 transitions. [2021-10-08 16:17:05,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 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 16:17:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 16536 transitions. [2021-10-08 16:17:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-08 16:17:05,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:05,473 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2021-10-08 16:17:05,502 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 16:17:05,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-10-08 16:17:05,674 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1920031732, now seen corresponding path program 66 times [2021-10-08 16:17:05,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:05,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333501281] [2021-10-08 16:17:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:05,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:07,735 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 16:17:07,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:07,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333501281] [2021-10-08 16:17:07,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333501281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:07,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538581136] [2021-10-08 16:17:07,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:17:07,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:07,738 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 16:17:07,739 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 16:17:08,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-08 16:17:08,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:08,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-08 16:17:08,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:08,792 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 16:17:08,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538581136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:08,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:08,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-08 16:17:08,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926890897] [2021-10-08 16:17:08,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-08 16:17:08,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-08 16:17:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:17:08,795 INFO L87 Difference]: Start difference. First operand 4272 states and 16536 transitions. Second operand has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 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 16:17:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:11,177 INFO L93 Difference]: Finished difference Result 9368 states and 36645 transitions. [2021-10-08 16:17:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-08 16:17:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 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 69 [2021-10-08 16:17:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:11,204 INFO L225 Difference]: With dead ends: 9368 [2021-10-08 16:17:11,204 INFO L226 Difference]: Without dead ends: 8028 [2021-10-08 16:17:11,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1896.9ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:17:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-10-08 16:17:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4332. [2021-10-08 16:17:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4317 states have (on average 3.8841788278897385) internal successors, (16768), 4331 states have internal predecessors, (16768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 16768 transitions. [2021-10-08 16:17:11,420 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 16768 transitions. Word has length 69 [2021-10-08 16:17:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:11,420 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 16768 transitions. [2021-10-08 16:17:11,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 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 16:17:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 16768 transitions. [2021-10-08 16:17:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-08 16:17:11,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:11,427 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2021-10-08 16:17:11,465 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 16:17:11,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:11,640 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash 608558913, now seen corresponding path program 67 times [2021-10-08 16:17:11,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:11,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510452415] [2021-10-08 16:17:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:11,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:13,702 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 16:17:13,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:13,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510452415] [2021-10-08 16:17:13,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510452415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:13,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069987255] [2021-10-08 16:17:13,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:17:13,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:13,705 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 16:17:13,706 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 16:17:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:14,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-08 16:17:14,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:14,773 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 16:17:14,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069987255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:14,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:14,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-08 16:17:14,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340987966] [2021-10-08 16:17:14,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-08 16:17:14,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-08 16:17:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:17:14,775 INFO L87 Difference]: Start difference. First operand 4332 states and 16768 transitions. Second operand has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 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 16:17:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:17,336 INFO L93 Difference]: Finished difference Result 9504 states and 37178 transitions. [2021-10-08 16:17:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-08 16:17:17,336 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 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 70 [2021-10-08 16:17:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:17,362 INFO L225 Difference]: With dead ends: 9504 [2021-10-08 16:17:17,362 INFO L226 Difference]: Without dead ends: 8144 [2021-10-08 16:17:17,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1916.2ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:17:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-10-08 16:17:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 4392. [2021-10-08 16:17:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4377 states have (on average 3.8839387708476125) internal successors, (17000), 4391 states have internal predecessors, (17000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 17000 transitions. [2021-10-08 16:17:17,484 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 17000 transitions. Word has length 70 [2021-10-08 16:17:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:17,484 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 17000 transitions. [2021-10-08 16:17:17,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 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 16:17:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 17000 transitions. [2021-10-08 16:17:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-08 16:17:17,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:17,493 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2021-10-08 16:17:17,519 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 16:17:17,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:17,694 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1685457580, now seen corresponding path program 68 times [2021-10-08 16:17:17,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:17,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292877512] [2021-10-08 16:17:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:17,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:19,867 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 16:17:19,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292877512] [2021-10-08 16:17:19,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292877512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:19,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209089258] [2021-10-08 16:17:19,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:17:19,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:19,870 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 16:17:19,872 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 16:17:20,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:17:20,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:20,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-08 16:17:20,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:20,960 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 16:17:20,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209089258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:20,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:20,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-08 16:17:20,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740092056] [2021-10-08 16:17:20,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-08 16:17:20,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-08 16:17:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:17:20,964 INFO L87 Difference]: Start difference. First operand 4392 states and 17000 transitions. Second operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 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 16:17:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:23,525 INFO L93 Difference]: Finished difference Result 9640 states and 37711 transitions. [2021-10-08 16:17:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-08 16:17:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 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 71 [2021-10-08 16:17:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:23,554 INFO L225 Difference]: With dead ends: 9640 [2021-10-08 16:17:23,554 INFO L226 Difference]: Without dead ends: 8260 [2021-10-08 16:17:23,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1989.9ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:17:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2021-10-08 16:17:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 4452. [2021-10-08 16:17:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4437 states have (on average 3.8837052062204194) internal successors, (17232), 4451 states have internal predecessors, (17232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 17232 transitions. [2021-10-08 16:17:23,678 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 17232 transitions. Word has length 71 [2021-10-08 16:17:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:23,679 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 17232 transitions. [2021-10-08 16:17:23,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 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 16:17:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 17232 transitions. [2021-10-08 16:17:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-08 16:17:23,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:23,687 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2021-10-08 16:17:23,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-08 16:17:23,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:23,888 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash 709577889, now seen corresponding path program 69 times [2021-10-08 16:17:23,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:23,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318380491] [2021-10-08 16:17:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:23,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:26,137 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 16:17:26,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:26,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318380491] [2021-10-08 16:17:26,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318380491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:26,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784186621] [2021-10-08 16:17:26,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:17:26,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:26,139 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 16:17:26,140 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 16:17:27,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-08 16:17:27,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-08 16:17:27,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:27,304 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 16:17:27,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784186621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:27,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:27,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-08 16:17:27,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650320579] [2021-10-08 16:17:27,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-08 16:17:27,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-08 16:17:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:17:27,308 INFO L87 Difference]: Start difference. First operand 4452 states and 17232 transitions. Second operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 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 16:17:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:29,922 INFO L93 Difference]: Finished difference Result 9776 states and 38244 transitions. [2021-10-08 16:17:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-08 16:17:29,923 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 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 72 [2021-10-08 16:17:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:29,950 INFO L225 Difference]: With dead ends: 9776 [2021-10-08 16:17:29,950 INFO L226 Difference]: Without dead ends: 8376 [2021-10-08 16:17:29,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2090.7ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:17:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2021-10-08 16:17:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 4512. [2021-10-08 16:17:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4497 states have (on average 3.8834778741383142) internal successors, (17464), 4511 states have internal predecessors, (17464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 17464 transitions. [2021-10-08 16:17:30,072 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 17464 transitions. Word has length 72 [2021-10-08 16:17:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:30,073 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 17464 transitions. [2021-10-08 16:17:30,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 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 16:17:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 17464 transitions. [2021-10-08 16:17:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-08 16:17:30,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:30,081 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2021-10-08 16:17:30,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:30,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:30,282 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:30,283 INFO L82 PathProgramCache]: Analyzing trace with hash 522078540, now seen corresponding path program 70 times [2021-10-08 16:17:30,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:30,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456470968] [2021-10-08 16:17:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:30,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:32,680 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 16:17:32,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:32,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456470968] [2021-10-08 16:17:32,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456470968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:32,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487545335] [2021-10-08 16:17:32,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:17:32,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:32,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:32,684 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 16:17:32,686 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 16:17:33,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:17:33,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:33,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-08 16:17:33,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:33,832 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 16:17:33,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487545335] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:33,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:33,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-08 16:17:33,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618074279] [2021-10-08 16:17:33,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-08 16:17:33,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-08 16:17:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:17:33,835 INFO L87 Difference]: Start difference. First operand 4512 states and 17464 transitions. Second operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 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 16:17:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:36,696 INFO L93 Difference]: Finished difference Result 9912 states and 38777 transitions. [2021-10-08 16:17:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-08 16:17:36,697 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 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 73 [2021-10-08 16:17:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:36,723 INFO L225 Difference]: With dead ends: 9912 [2021-10-08 16:17:36,723 INFO L226 Difference]: Without dead ends: 8492 [2021-10-08 16:17:36,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2220.6ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:17:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-10-08 16:17:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4572. [2021-10-08 16:17:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4557 states have (on average 3.8832565284178187) internal successors, (17696), 4571 states have internal predecessors, (17696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 17696 transitions. [2021-10-08 16:17:36,916 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 17696 transitions. Word has length 73 [2021-10-08 16:17:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:36,916 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 17696 transitions. [2021-10-08 16:17:36,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 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 16:17:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 17696 transitions. [2021-10-08 16:17:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-08 16:17:36,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:36,924 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2021-10-08 16:17:36,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:37,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:37,125 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:37,126 INFO L82 PathProgramCache]: Analyzing trace with hash -995433983, now seen corresponding path program 71 times [2021-10-08 16:17:37,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:37,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655405986] [2021-10-08 16:17:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:37,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:39,500 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 16:17:39,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:39,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655405986] [2021-10-08 16:17:39,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655405986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:39,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646728573] [2021-10-08 16:17:39,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:17:39,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:39,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:39,503 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 16:17:39,504 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 16:17:40,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-08 16:17:40,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:40,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-08 16:17:40,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:40,708 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 16:17:40,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646728573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:40,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:40,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-08 16:17:40,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999008910] [2021-10-08 16:17:40,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-08 16:17:40,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-08 16:17:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:17:40,712 INFO L87 Difference]: Start difference. First operand 4572 states and 17696 transitions. Second operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 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 16:17:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:43,662 INFO L93 Difference]: Finished difference Result 10048 states and 39310 transitions. [2021-10-08 16:17:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:17:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 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 74 [2021-10-08 16:17:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:43,689 INFO L225 Difference]: With dead ends: 10048 [2021-10-08 16:17:43,689 INFO L226 Difference]: Without dead ends: 8608 [2021-10-08 16:17:43,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2212.1ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:17:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2021-10-08 16:17:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 4632. [2021-10-08 16:17:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4617 states have (on average 3.8830409356725144) internal successors, (17928), 4631 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 17928 transitions. [2021-10-08 16:17:43,810 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 17928 transitions. Word has length 74 [2021-10-08 16:17:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:43,810 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 17928 transitions. [2021-10-08 16:17:43,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 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 16:17:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 17928 transitions. [2021-10-08 16:17:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-08 16:17:43,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:43,818 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2021-10-08 16:17:43,844 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 16:17:44,018 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,SelfDestructingSolverStorable88 [2021-10-08 16:17:44,019 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -793681940, now seen corresponding path program 72 times [2021-10-08 16:17:44,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:44,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044550919] [2021-10-08 16:17:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:44,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:46,501 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 16:17:46,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:46,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044550919] [2021-10-08 16:17:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044550919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:46,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984825167] [2021-10-08 16:17:46,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:17:46,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:46,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:46,503 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 16:17:46,504 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 16:17:47,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-08 16:17:47,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:47,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-08 16:17:47,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:47,762 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 16:17:47,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984825167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:47,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:47,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-08 16:17:47,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711700844] [2021-10-08 16:17:47,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-08 16:17:47,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-08 16:17:47,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:17:47,765 INFO L87 Difference]: Start difference. First operand 4632 states and 17928 transitions. Second operand has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 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 16:17:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:50,822 INFO L93 Difference]: Finished difference Result 10184 states and 39843 transitions. [2021-10-08 16:17:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-08 16:17:50,822 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 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 75 [2021-10-08 16:17:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:50,852 INFO L225 Difference]: With dead ends: 10184 [2021-10-08 16:17:50,852 INFO L226 Difference]: Without dead ends: 8724 [2021-10-08 16:17:50,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2318.5ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:17:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2021-10-08 16:17:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 4692. [2021-10-08 16:17:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4677 states have (on average 3.8828308744921958) internal successors, (18160), 4691 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 18160 transitions. [2021-10-08 16:17:50,980 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 18160 transitions. Word has length 75 [2021-10-08 16:17:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:50,980 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 18160 transitions. [2021-10-08 16:17:50,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 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 16:17:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 18160 transitions. [2021-10-08 16:17:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-08 16:17:50,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:50,989 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2021-10-08 16:17:51,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:51,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:51,194 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1165664097, now seen corresponding path program 73 times [2021-10-08 16:17:51,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:51,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322871628] [2021-10-08 16:17:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:51,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:53,752 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 16:17:53,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:53,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322871628] [2021-10-08 16:17:53,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322871628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:53,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143025819] [2021-10-08 16:17:53,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:17:53,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:53,754 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 16:17:53,755 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 16:17:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:54,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-08 16:17:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:55,014 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 16:17:55,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143025819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:55,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:55,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-08 16:17:55,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226248592] [2021-10-08 16:17:55,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-08 16:17:55,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-08 16:17:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:17:55,018 INFO L87 Difference]: Start difference. First operand 4692 states and 18160 transitions. Second operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 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 16:17:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:58,246 INFO L93 Difference]: Finished difference Result 10320 states and 40376 transitions. [2021-10-08 16:17:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 16:17:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 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 76 [2021-10-08 16:17:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:58,277 INFO L225 Difference]: With dead ends: 10320 [2021-10-08 16:17:58,277 INFO L226 Difference]: Without dead ends: 8840 [2021-10-08 16:17:58,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2387.3ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:17:58,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-10-08 16:17:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 4752. [2021-10-08 16:17:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4737 states have (on average 3.8826261346843993) internal successors, (18392), 4751 states have internal predecessors, (18392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 18392 transitions. [2021-10-08 16:17:58,406 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 18392 transitions. Word has length 76 [2021-10-08 16:17:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:58,406 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 18392 transitions. [2021-10-08 16:17:58,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 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 16:17:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 18392 transitions. [2021-10-08 16:17:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-08 16:17:58,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:58,415 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2021-10-08 16:17:58,442 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 16:17:58,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:58,616 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:17:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1775849100, now seen corresponding path program 74 times [2021-10-08 16:17:58,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:58,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28232219] [2021-10-08 16:17:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:58,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:01,239 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 16:18:01,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:01,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28232219] [2021-10-08 16:18:01,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28232219] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:01,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286496840] [2021-10-08 16:18:01,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:18:01,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:01,243 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 16:18:01,244 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 16:18:02,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:18:02,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:02,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-08 16:18:02,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:02,488 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 16:18:02,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286496840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:02,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:02,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-08 16:18:02,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335440854] [2021-10-08 16:18:02,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-08 16:18:02,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-08 16:18:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:18:02,492 INFO L87 Difference]: Start difference. First operand 4752 states and 18392 transitions. Second operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 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 16:18:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:05,735 INFO L93 Difference]: Finished difference Result 10456 states and 40909 transitions. [2021-10-08 16:18:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-08 16:18:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 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 77 [2021-10-08 16:18:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:05,767 INFO L225 Difference]: With dead ends: 10456 [2021-10-08 16:18:05,767 INFO L226 Difference]: Without dead ends: 8956 [2021-10-08 16:18:05,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2441.7ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:18:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2021-10-08 16:18:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4812. [2021-10-08 16:18:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4797 states have (on average 3.882426516572858) internal successors, (18624), 4811 states have internal predecessors, (18624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 18624 transitions. [2021-10-08 16:18:05,913 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 18624 transitions. Word has length 77 [2021-10-08 16:18:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 18624 transitions. [2021-10-08 16:18:05,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 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 16:18:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 18624 transitions. [2021-10-08 16:18:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-08 16:18:05,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:05,924 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2021-10-08 16:18:05,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-08 16:18:06,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:06,131 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash -783252287, now seen corresponding path program 75 times [2021-10-08 16:18:06,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:06,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470748092] [2021-10-08 16:18:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:06,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:08,865 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 16:18:08,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:08,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470748092] [2021-10-08 16:18:08,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470748092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:08,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874860989] [2021-10-08 16:18:08,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:18:08,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:08,869 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 16:18:08,870 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 16:18:10,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-08 16:18:10,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:10,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-08 16:18:10,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:10,214 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 16:18:10,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874860989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:10,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:10,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-08 16:18:10,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154799359] [2021-10-08 16:18:10,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-08 16:18:10,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-08 16:18:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:18:10,217 INFO L87 Difference]: Start difference. First operand 4812 states and 18624 transitions. Second operand has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 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 16:18:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:13,811 INFO L93 Difference]: Finished difference Result 10592 states and 41442 transitions. [2021-10-08 16:18:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-08 16:18:13,812 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 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 78 [2021-10-08 16:18:13,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:13,841 INFO L225 Difference]: With dead ends: 10592 [2021-10-08 16:18:13,842 INFO L226 Difference]: Without dead ends: 9072 [2021-10-08 16:18:13,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2562.9ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:18:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-10-08 16:18:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4872. [2021-10-08 16:18:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4857 states have (on average 3.8822318303479513) internal successors, (18856), 4871 states have internal predecessors, (18856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 18856 transitions. [2021-10-08 16:18:13,974 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 18856 transitions. Word has length 78 [2021-10-08 16:18:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:13,974 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 18856 transitions. [2021-10-08 16:18:13,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 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 16:18:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 18856 transitions. [2021-10-08 16:18:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-08 16:18:13,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:13,983 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2021-10-08 16:18:14,011 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 16:18:14,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:14,184 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1488983340, now seen corresponding path program 76 times [2021-10-08 16:18:14,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:14,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204862054] [2021-10-08 16:18:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:14,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:16,939 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 16:18:16,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:16,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204862054] [2021-10-08 16:18:16,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204862054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:16,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515026177] [2021-10-08 16:18:16,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:18:16,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:16,942 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 16:18:16,943 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 16:18:18,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:18:18,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:18,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-08 16:18:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:18,252 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 16:18:18,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515026177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:18,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:18,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-08 16:18:18,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341117180] [2021-10-08 16:18:18,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-08 16:18:18,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-08 16:18:18,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:18:18,259 INFO L87 Difference]: Start difference. First operand 4872 states and 18856 transitions. Second operand has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 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 16:18:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:21,772 INFO L93 Difference]: Finished difference Result 10728 states and 41975 transitions. [2021-10-08 16:18:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 16:18:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 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 79 [2021-10-08 16:18:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:21,801 INFO L225 Difference]: With dead ends: 10728 [2021-10-08 16:18:21,802 INFO L226 Difference]: Without dead ends: 9188 [2021-10-08 16:18:21,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2575.7ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:18:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2021-10-08 16:18:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 4932. [2021-10-08 16:18:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4917 states have (on average 3.8820418954647145) internal successors, (19088), 4931 states have internal predecessors, (19088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 19088 transitions. [2021-10-08 16:18:21,922 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 19088 transitions. Word has length 79 [2021-10-08 16:18:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:21,922 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 19088 transitions. [2021-10-08 16:18:21,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 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 16:18:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 19088 transitions. [2021-10-08 16:18:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-08 16:18:21,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:21,932 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2021-10-08 16:18:21,958 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 16:18:22,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:22,132 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1086156255, now seen corresponding path program 77 times [2021-10-08 16:18:22,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122268772] [2021-10-08 16:18:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:22,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:24,829 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 16:18:24,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:24,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122268772] [2021-10-08 16:18:24,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122268772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:24,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608723220] [2021-10-08 16:18:24,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:18:24,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:24,831 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 16:18:24,832 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 16:18:25,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-08 16:18:25,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-08 16:18:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:26,166 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 16:18:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608723220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:26,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:26,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-08 16:18:26,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172912484] [2021-10-08 16:18:26,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-08 16:18:26,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-08 16:18:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:18:26,171 INFO L87 Difference]: Start difference. First operand 4932 states and 19088 transitions. Second operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 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 16:18:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:30,185 INFO L93 Difference]: Finished difference Result 10864 states and 42508 transitions. [2021-10-08 16:18:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-08 16:18:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 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 80 [2021-10-08 16:18:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:30,217 INFO L225 Difference]: With dead ends: 10864 [2021-10-08 16:18:30,217 INFO L226 Difference]: Without dead ends: 9304 [2021-10-08 16:18:30,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2529.4ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:18:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-10-08 16:18:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4992. [2021-10-08 16:18:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 4977 states have (on average 3.8818565400843883) internal successors, (19320), 4991 states have internal predecessors, (19320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 19320 transitions. [2021-10-08 16:18:30,356 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 19320 transitions. Word has length 80 [2021-10-08 16:18:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:30,357 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 19320 transitions. [2021-10-08 16:18:30,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 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 16:18:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 19320 transitions. [2021-10-08 16:18:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-08 16:18:30,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:30,366 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2021-10-08 16:18:30,395 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 16:18:30,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:30,567 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 688894924, now seen corresponding path program 78 times [2021-10-08 16:18:30,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:30,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013049568] [2021-10-08 16:18:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:30,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:33,329 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 16:18:33,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:33,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013049568] [2021-10-08 16:18:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013049568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:33,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003354129] [2021-10-08 16:18:33,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:18:33,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:33,332 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 16:18:33,334 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 16:18:34,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-08 16:18:34,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-08 16:18:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:34,710 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 16:18:34,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003354129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:34,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:34,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-08 16:18:34,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933647472] [2021-10-08 16:18:34,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-08 16:18:34,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:34,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-08 16:18:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:18:34,715 INFO L87 Difference]: Start difference. First operand 4992 states and 19320 transitions. Second operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 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 16:18:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:39,008 INFO L93 Difference]: Finished difference Result 11000 states and 43041 transitions. [2021-10-08 16:18:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-08 16:18:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 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 81 [2021-10-08 16:18:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:39,046 INFO L225 Difference]: With dead ends: 11000 [2021-10-08 16:18:39,046 INFO L226 Difference]: Without dead ends: 9420 [2021-10-08 16:18:39,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2584.8ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:18:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2021-10-08 16:18:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 5052. [2021-10-08 16:18:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 5037 states have (on average 3.8816756005558863) internal successors, (19552), 5051 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 19552 transitions. [2021-10-08 16:18:39,206 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 19552 transitions. Word has length 81 [2021-10-08 16:18:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:39,210 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 19552 transitions. [2021-10-08 16:18:39,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 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 16:18:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 19552 transitions. [2021-10-08 16:18:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-08 16:18:39,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:39,219 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2021-10-08 16:18:39,247 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 16:18:39,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:39,420 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash -119093375, now seen corresponding path program 79 times [2021-10-08 16:18:39,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:39,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742789352] [2021-10-08 16:18:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:39,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:42,271 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 16:18:42,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:42,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742789352] [2021-10-08 16:18:42,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742789352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:42,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390198665] [2021-10-08 16:18:42,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:18:42,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:42,274 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 16:18:42,274 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 16:18:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:43,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-08 16:18:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:43,614 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 16:18:43,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390198665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:43,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:43,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-08 16:18:43,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295479781] [2021-10-08 16:18:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-08 16:18:43,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-08 16:18:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:18:43,618 INFO L87 Difference]: Start difference. First operand 5052 states and 19552 transitions. Second operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 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 16:18:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:47,410 INFO L93 Difference]: Finished difference Result 11136 states and 43574 transitions. [2021-10-08 16:18:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-08 16:18:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 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 82 [2021-10-08 16:18:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:47,440 INFO L225 Difference]: With dead ends: 11136 [2021-10-08 16:18:47,441 INFO L226 Difference]: Without dead ends: 9536 [2021-10-08 16:18:47,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2652.0ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:18:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-08 16:18:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 5112. [2021-10-08 16:18:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5097 states have (on average 3.8814989209338826) internal successors, (19784), 5111 states have internal predecessors, (19784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 19784 transitions. [2021-10-08 16:18:47,574 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 19784 transitions. Word has length 82 [2021-10-08 16:18:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:47,574 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 19784 transitions. [2021-10-08 16:18:47,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 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 16:18:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 19784 transitions. [2021-10-08 16:18:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-08 16:18:47,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:47,583 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2021-10-08 16:18:47,609 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 16:18:47,783 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,SelfDestructingSolverStorable96 [2021-10-08 16:18:47,784 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash 603073132, now seen corresponding path program 80 times [2021-10-08 16:18:47,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:47,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477783681] [2021-10-08 16:18:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:47,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:50,748 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 16:18:50,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:50,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477783681] [2021-10-08 16:18:50,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477783681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:50,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993925146] [2021-10-08 16:18:50,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:18:50,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:50,751 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 16:18:50,752 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 16:18:51,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:18:51,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:51,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-08 16:18:51,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:52,142 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 16:18:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993925146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:52,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-08 16:18:52,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281541282] [2021-10-08 16:18:52,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-08 16:18:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-08 16:18:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:18:52,146 INFO L87 Difference]: Start difference. First operand 5112 states and 19784 transitions. Second operand has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 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 16:18:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:56,599 INFO L93 Difference]: Finished difference Result 11272 states and 44107 transitions. [2021-10-08 16:18:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-08 16:18:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 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 83 [2021-10-08 16:18:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:56,630 INFO L225 Difference]: With dead ends: 11272 [2021-10-08 16:18:56,630 INFO L226 Difference]: Without dead ends: 9652 [2021-10-08 16:18:56,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2786.9ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:18:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2021-10-08 16:18:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 5172. [2021-10-08 16:18:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5157 states have (on average 3.881326352530541) internal successors, (20016), 5171 states have internal predecessors, (20016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 20016 transitions. [2021-10-08 16:18:56,766 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 20016 transitions. Word has length 83 [2021-10-08 16:18:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:56,772 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 20016 transitions. [2021-10-08 16:18:56,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 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 16:18:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 20016 transitions. [2021-10-08 16:18:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-08 16:18:56,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:56,786 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2021-10-08 16:18:56,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-08 16:18:57,001 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,SelfDestructingSolverStorable97 [2021-10-08 16:18:57,002 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:18:57,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:57,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1515398369, now seen corresponding path program 81 times [2021-10-08 16:18:57,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:57,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545560643] [2021-10-08 16:18:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:57,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:59,969 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 16:18:59,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:59,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545560643] [2021-10-08 16:18:59,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545560643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:59,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498517347] [2021-10-08 16:18:59,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:18:59,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:59,972 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 16:18:59,974 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 16:19:01,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-08 16:19:01,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:01,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-08 16:19:01,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:01,424 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 16:19:01,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498517347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:01,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:01,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-08 16:19:01,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970548394] [2021-10-08 16:19:01,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-08 16:19:01,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-08 16:19:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:19:01,428 INFO L87 Difference]: Start difference. First operand 5172 states and 20016 transitions. Second operand has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 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 16:19:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:05,763 INFO L93 Difference]: Finished difference Result 11408 states and 44640 transitions. [2021-10-08 16:19:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-08 16:19:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 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 84 [2021-10-08 16:19:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:05,794 INFO L225 Difference]: With dead ends: 11408 [2021-10-08 16:19:05,794 INFO L226 Difference]: Without dead ends: 9768 [2021-10-08 16:19:05,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2794.4ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:19:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2021-10-08 16:19:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 5232. [2021-10-08 16:19:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5217 states have (on average 3.881157753498179) internal successors, (20248), 5231 states have internal predecessors, (20248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 20248 transitions. [2021-10-08 16:19:05,927 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 20248 transitions. Word has length 84 [2021-10-08 16:19:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:05,928 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 20248 transitions. [2021-10-08 16:19:05,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 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 16:19:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 20248 transitions. [2021-10-08 16:19:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-08 16:19:05,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:05,936 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2021-10-08 16:19:05,964 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 16:19:06,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:06,137 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:06,138 INFO L82 PathProgramCache]: Analyzing trace with hash -267290356, now seen corresponding path program 82 times [2021-10-08 16:19:06,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:06,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756046213] [2021-10-08 16:19:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:06,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:09,170 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 16:19:09,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756046213] [2021-10-08 16:19:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756046213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109376274] [2021-10-08 16:19:09,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:19:09,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:09,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:09,177 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 16:19:09,192 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 16:19:10,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:19:10,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-08 16:19:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:10,677 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 16:19:10,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109376274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:10,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:10,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-08 16:19:10,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849485033] [2021-10-08 16:19:10,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-08 16:19:10,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-08 16:19:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:19:10,680 INFO L87 Difference]: Start difference. First operand 5232 states and 20248 transitions. Second operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 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 16:19:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:15,260 INFO L93 Difference]: Finished difference Result 11544 states and 45173 transitions. [2021-10-08 16:19:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-08 16:19:15,260 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 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 85 [2021-10-08 16:19:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:15,290 INFO L225 Difference]: With dead ends: 11544 [2021-10-08 16:19:15,290 INFO L226 Difference]: Without dead ends: 9884 [2021-10-08 16:19:15,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2852.4ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:19:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-10-08 16:19:15,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 5292. [2021-10-08 16:19:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5277 states have (on average 3.8809929884404015) internal successors, (20480), 5291 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 20480 transitions. [2021-10-08 16:19:15,419 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 20480 transitions. Word has length 85 [2021-10-08 16:19:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:15,419 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 20480 transitions. [2021-10-08 16:19:15,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 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 16:19:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 20480 transitions. [2021-10-08 16:19:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-08 16:19:15,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:15,428 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2021-10-08 16:19:15,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-08 16:19:15,628 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,SelfDestructingSolverStorable99 [2021-10-08 16:19:15,628 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:15,629 INFO L82 PathProgramCache]: Analyzing trace with hash 303934017, now seen corresponding path program 83 times [2021-10-08 16:19:15,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:15,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351445098] [2021-10-08 16:19:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:15,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:18,761 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 16:19:18,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:18,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351445098] [2021-10-08 16:19:18,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351445098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:18,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343269497] [2021-10-08 16:19:18,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:19:18,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:18,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:18,763 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 16:19:18,764 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 16:19:20,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-08 16:19:20,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:20,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-08 16:19:20,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:20,266 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 16:19:20,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343269497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:20,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:20,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-08 16:19:20,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748647976] [2021-10-08 16:19:20,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-08 16:19:20,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-08 16:19:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:19:20,270 INFO L87 Difference]: Start difference. First operand 5292 states and 20480 transitions. Second operand has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 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 16:19:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:24,710 INFO L93 Difference]: Finished difference Result 11680 states and 45706 transitions. [2021-10-08 16:19:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-08 16:19:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 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 86 [2021-10-08 16:19:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:24,741 INFO L225 Difference]: With dead ends: 11680 [2021-10-08 16:19:24,742 INFO L226 Difference]: Without dead ends: 10000 [2021-10-08 16:19:24,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2949.7ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:19:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-10-08 16:19:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5352. [2021-10-08 16:19:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5337 states have (on average 3.880831928049466) internal successors, (20712), 5351 states have internal predecessors, (20712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 20712 transitions. [2021-10-08 16:19:24,892 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 20712 transitions. Word has length 86 [2021-10-08 16:19:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:24,892 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 20712 transitions. [2021-10-08 16:19:24,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 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 16:19:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 20712 transitions. [2021-10-08 16:19:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-08 16:19:24,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:24,903 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2021-10-08 16:19:24,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-08 16:19:25,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:25,103 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:25,104 INFO L82 PathProgramCache]: Analyzing trace with hash 832020396, now seen corresponding path program 84 times [2021-10-08 16:19:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:25,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222455573] [2021-10-08 16:19:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:25,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:28,333 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 16:19:28,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:28,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222455573] [2021-10-08 16:19:28,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222455573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:28,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607046989] [2021-10-08 16:19:28,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:19:28,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:28,335 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 16:19:28,337 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 16:19:29,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-08 16:19:29,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:29,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-08 16:19:29,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:29,882 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 16:19:29,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607046989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:29,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:29,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-08 16:19:29,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534306998] [2021-10-08 16:19:29,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-08 16:19:29,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-08 16:19:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:19:29,885 INFO L87 Difference]: Start difference. First operand 5352 states and 20712 transitions. Second operand has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 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 16:19:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:34,602 INFO L93 Difference]: Finished difference Result 11816 states and 46239 transitions. [2021-10-08 16:19:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 16:19:34,602 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 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 87 [2021-10-08 16:19:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:34,642 INFO L225 Difference]: With dead ends: 11816 [2021-10-08 16:19:34,642 INFO L226 Difference]: Without dead ends: 10116 [2021-10-08 16:19:34,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3041.0ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:19:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-10-08 16:19:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5412. [2021-10-08 16:19:34,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5397 states have (on average 3.880674448767834) internal successors, (20944), 5411 states have internal predecessors, (20944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 20944 transitions. [2021-10-08 16:19:34,791 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 20944 transitions. Word has length 87 [2021-10-08 16:19:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:34,792 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 20944 transitions. [2021-10-08 16:19:34,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 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 16:19:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 20944 transitions. [2021-10-08 16:19:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-08 16:19:34,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:34,801 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2021-10-08 16:19:34,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-10-08 16:19:35,002 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,SelfDestructingSolverStorable101 [2021-10-08 16:19:35,002 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:35,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:35,003 INFO L82 PathProgramCache]: Analyzing trace with hash 22828961, now seen corresponding path program 85 times [2021-10-08 16:19:35,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:35,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332018124] [2021-10-08 16:19:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:35,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:38,292 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 16:19:38,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:38,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332018124] [2021-10-08 16:19:38,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332018124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:38,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274013615] [2021-10-08 16:19:38,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:19:38,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:38,295 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 16:19:38,296 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 16:19:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:39,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-08 16:19:39,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:39,823 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 16:19:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274013615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:39,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:39,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-08 16:19:39,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704291944] [2021-10-08 16:19:39,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-08 16:19:39,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-08 16:19:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:19:39,826 INFO L87 Difference]: Start difference. First operand 5412 states and 20944 transitions. Second operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 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 16:19:44,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:44,808 INFO L93 Difference]: Finished difference Result 11952 states and 46772 transitions. [2021-10-08 16:19:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-08 16:19:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 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 88 [2021-10-08 16:19:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:44,845 INFO L225 Difference]: With dead ends: 11952 [2021-10-08 16:19:44,845 INFO L226 Difference]: Without dead ends: 10232 [2021-10-08 16:19:44,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3097.7ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:19:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2021-10-08 16:19:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 5472. [2021-10-08 16:19:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5457 states have (on average 3.8805204324720544) internal successors, (21176), 5471 states have internal predecessors, (21176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 21176 transitions. [2021-10-08 16:19:44,992 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 21176 transitions. Word has length 88 [2021-10-08 16:19:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:44,993 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 21176 transitions. [2021-10-08 16:19:44,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 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 16:19:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 21176 transitions. [2021-10-08 16:19:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-08 16:19:45,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:45,002 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2021-10-08 16:19:45,032 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 16:19:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:45,208 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:45,208 INFO L82 PathProgramCache]: Analyzing trace with hash 707698252, now seen corresponding path program 86 times [2021-10-08 16:19:45,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:45,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050973281] [2021-10-08 16:19:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:45,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:48,604 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 16:19:48,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:48,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050973281] [2021-10-08 16:19:48,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050973281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:48,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669899624] [2021-10-08 16:19:48,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:19:48,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:48,607 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 16:19:48,608 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 16:19:49,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:19:49,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:49,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-08 16:19:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:50,135 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 16:19:50,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669899624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:50,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:50,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-08 16:19:50,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954556919] [2021-10-08 16:19:50,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-08 16:19:50,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-08 16:19:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:19:50,139 INFO L87 Difference]: Start difference. First operand 5472 states and 21176 transitions. Second operand has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 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 16:19:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:55,187 INFO L93 Difference]: Finished difference Result 12088 states and 47305 transitions. [2021-10-08 16:19:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-08 16:19:55,187 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 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 89 [2021-10-08 16:19:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:55,221 INFO L225 Difference]: With dead ends: 12088 [2021-10-08 16:19:55,222 INFO L226 Difference]: Without dead ends: 10348 [2021-10-08 16:19:55,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3197.3ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:19:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-10-08 16:19:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 5532. [2021-10-08 16:19:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5517 states have (on average 3.8803697661772705) internal successors, (21408), 5531 states have internal predecessors, (21408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 21408 transitions. [2021-10-08 16:19:55,377 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 21408 transitions. Word has length 89 [2021-10-08 16:19:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:55,377 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 21408 transitions. [2021-10-08 16:19:55,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 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 16:19:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 21408 transitions. [2021-10-08 16:19:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-08 16:19:55,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:55,387 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2021-10-08 16:19:55,417 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 16:19:55,587 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,SelfDestructingSolverStorable103 [2021-10-08 16:19:55,588 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:19:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash 463809793, now seen corresponding path program 87 times [2021-10-08 16:19:55,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:55,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182976072] [2021-10-08 16:19:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:55,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:59,075 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 16:19:59,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:59,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182976072] [2021-10-08 16:19:59,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182976072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:59,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356584602] [2021-10-08 16:19:59,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:19:59,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:59,077 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 16:19:59,078 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 16:20:00,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-08 16:20:00,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:00,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-08 16:20:00,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:00,781 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 16:20:00,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356584602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:00,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:00,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-08 16:20:00,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553569708] [2021-10-08 16:20:00,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-08 16:20:00,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-08 16:20:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:20:00,783 INFO L87 Difference]: Start difference. First operand 5532 states and 21408 transitions. Second operand has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 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 16:20:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:06,317 INFO L93 Difference]: Finished difference Result 12224 states and 47838 transitions. [2021-10-08 16:20:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-08 16:20:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 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 90 [2021-10-08 16:20:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:06,351 INFO L225 Difference]: With dead ends: 12224 [2021-10-08 16:20:06,351 INFO L226 Difference]: Without dead ends: 10464 [2021-10-08 16:20:06,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3292.1ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:20:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10464 states. [2021-10-08 16:20:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10464 to 5592. [2021-10-08 16:20:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5577 states have (on average 3.8802223417608035) internal successors, (21640), 5591 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 21640 transitions. [2021-10-08 16:20:06,501 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 21640 transitions. Word has length 90 [2021-10-08 16:20:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:06,502 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 21640 transitions. [2021-10-08 16:20:06,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 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 16:20:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 21640 transitions. [2021-10-08 16:20:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-08 16:20:06,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:06,511 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2021-10-08 16:20:06,541 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 16:20:06,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:06,712 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:20:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1493202156, now seen corresponding path program 88 times [2021-10-08 16:20:06,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:06,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695791146] [2021-10-08 16:20:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:06,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:10,195 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 16:20:10,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:10,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695791146] [2021-10-08 16:20:10,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695791146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:10,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679668922] [2021-10-08 16:20:10,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:20:10,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:10,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:10,197 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 16:20:10,198 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 16:20:11,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:20:11,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:11,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-08 16:20:11,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:11,781 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 16:20:11,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679668922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:11,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:11,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-08 16:20:11,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399600009] [2021-10-08 16:20:11,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-08 16:20:11,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:11,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-08 16:20:11,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:20:11,786 INFO L87 Difference]: Start difference. First operand 5592 states and 21640 transitions. Second operand has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 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 16:20:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:17,228 INFO L93 Difference]: Finished difference Result 12360 states and 48371 transitions. [2021-10-08 16:20:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-08 16:20:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 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 91 [2021-10-08 16:20:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:17,264 INFO L225 Difference]: With dead ends: 12360 [2021-10-08 16:20:17,265 INFO L226 Difference]: Without dead ends: 10580 [2021-10-08 16:20:17,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3284.4ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:20:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-10-08 16:20:17,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5652. [2021-10-08 16:20:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5637 states have (on average 3.8800780557033883) internal successors, (21872), 5651 states have internal predecessors, (21872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 21872 transitions. [2021-10-08 16:20:17,418 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 21872 transitions. Word has length 91 [2021-10-08 16:20:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:17,419 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 21872 transitions. [2021-10-08 16:20:17,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 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 16:20:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 21872 transitions. [2021-10-08 16:20:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-08 16:20:17,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:17,429 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2021-10-08 16:20:17,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:17,629 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,SelfDestructingSolverStorable105 [2021-10-08 16:20:17,629 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:20:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash -955372959, now seen corresponding path program 89 times [2021-10-08 16:20:17,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:17,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345323385] [2021-10-08 16:20:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:17,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:21,303 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 16:20:21,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:21,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345323385] [2021-10-08 16:20:21,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345323385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:21,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390234986] [2021-10-08 16:20:21,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:20:21,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:21,306 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 16:20:21,307 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 16:20:22,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-08 16:20:22,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:22,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-08 16:20:22,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:22,943 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 16:20:22,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390234986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:22,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:22,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-08 16:20:22,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394569347] [2021-10-08 16:20:22,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-08 16:20:22,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-08 16:20:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:20:22,946 INFO L87 Difference]: Start difference. First operand 5652 states and 21872 transitions. Second operand has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 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 16:20:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:28,680 INFO L93 Difference]: Finished difference Result 12496 states and 48904 transitions. [2021-10-08 16:20:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-08 16:20:28,681 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 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 92 [2021-10-08 16:20:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:28,712 INFO L225 Difference]: With dead ends: 12496 [2021-10-08 16:20:28,712 INFO L226 Difference]: Without dead ends: 10696 [2021-10-08 16:20:28,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3448.8ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:20:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2021-10-08 16:20:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 5712. [2021-10-08 16:20:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5697 states have (on average 3.8799368088467614) internal successors, (22104), 5711 states have internal predecessors, (22104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 22104 transitions. [2021-10-08 16:20:28,858 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 22104 transitions. Word has length 92 [2021-10-08 16:20:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:28,858 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 22104 transitions. [2021-10-08 16:20:28,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 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 16:20:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 22104 transitions. [2021-10-08 16:20:28,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-08 16:20:28,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:28,869 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2021-10-08 16:20:28,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:29,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:29,070 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:20:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash 448209804, now seen corresponding path program 90 times [2021-10-08 16:20:29,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:29,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678727727] [2021-10-08 16:20:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:29,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:32,735 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 16:20:32,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:32,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678727727] [2021-10-08 16:20:32,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678727727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:32,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687450213] [2021-10-08 16:20:32,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:20:32,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:32,738 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 16:20:32,739 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 16:20:34,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-08 16:20:34,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-08 16:20:34,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:34,485 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 16:20:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687450213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:34,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-08 16:20:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111781600] [2021-10-08 16:20:34,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-08 16:20:34,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-08 16:20:34,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:20:34,488 INFO L87 Difference]: Start difference. First operand 5712 states and 22104 transitions. Second operand has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 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 16:20:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:40,421 INFO L93 Difference]: Finished difference Result 12632 states and 49437 transitions. [2021-10-08 16:20:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-08 16:20:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 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 93 [2021-10-08 16:20:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:40,458 INFO L225 Difference]: With dead ends: 12632 [2021-10-08 16:20:40,458 INFO L226 Difference]: Without dead ends: 10812 [2021-10-08 16:20:40,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3463.1ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:20:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10812 states. [2021-10-08 16:20:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10812 to 5772. [2021-10-08 16:20:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5757 states have (on average 3.879798506166406) internal successors, (22336), 5771 states have internal predecessors, (22336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 22336 transitions. [2021-10-08 16:20:40,723 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 22336 transitions. Word has length 93 [2021-10-08 16:20:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:40,723 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 22336 transitions. [2021-10-08 16:20:40,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 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 16:20:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 22336 transitions. [2021-10-08 16:20:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-08 16:20:40,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:40,733 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2021-10-08 16:20:40,762 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 16:20:40,942 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,SelfDestructingSolverStorable107 [2021-10-08 16:20:40,942 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:20:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1009602497, now seen corresponding path program 91 times [2021-10-08 16:20:40,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:40,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114734998] [2021-10-08 16:20:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:40,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:44,613 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 16:20:44,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:44,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114734998] [2021-10-08 16:20:44,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114734998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:44,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957713601] [2021-10-08 16:20:44,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:20:44,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:44,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:44,615 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 16:20:44,616 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 16:20:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:46,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-08 16:20:46,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:46,297 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 16:20:46,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957713601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:46,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:46,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-08 16:20:46,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091108369] [2021-10-08 16:20:46,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-08 16:20:46,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-08 16:20:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:20:46,301 INFO L87 Difference]: Start difference. First operand 5772 states and 22336 transitions. Second operand has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 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 16:20:52,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:52,087 INFO L93 Difference]: Finished difference Result 12768 states and 49970 transitions. [2021-10-08 16:20:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-08 16:20:52,088 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 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 94 [2021-10-08 16:20:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:52,132 INFO L225 Difference]: With dead ends: 12768 [2021-10-08 16:20:52,133 INFO L226 Difference]: Without dead ends: 10928 [2021-10-08 16:20:52,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3470.6ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:20:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2021-10-08 16:20:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 5832. [2021-10-08 16:20:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5817 states have (on average 3.8796630565583636) internal successors, (22568), 5831 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 22568 transitions. [2021-10-08 16:20:52,286 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 22568 transitions. Word has length 94 [2021-10-08 16:20:52,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:52,286 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 22568 transitions. [2021-10-08 16:20:52,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 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 16:20:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 22568 transitions. [2021-10-08 16:20:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-08 16:20:52,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:52,296 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2021-10-08 16:20:52,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:52,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:52,497 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:20:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1232906796, now seen corresponding path program 92 times [2021-10-08 16:20:52,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:52,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702143889] [2021-10-08 16:20:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:52,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:56,246 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 16:20:56,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:56,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702143889] [2021-10-08 16:20:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702143889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:56,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248095200] [2021-10-08 16:20:56,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:20:56,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:56,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:56,249 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 16:20:56,249 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 16:20:57,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:20:57,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:57,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-08 16:20:57,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:57,958 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 16:20:57,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248095200] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:57,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:57,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-08 16:20:57,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272448114] [2021-10-08 16:20:57,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-08 16:20:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-08 16:20:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:20:57,962 INFO L87 Difference]: Start difference. First operand 5832 states and 22568 transitions. Second operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 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 16:21:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:03,995 INFO L93 Difference]: Finished difference Result 12904 states and 50503 transitions. [2021-10-08 16:21:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-08 16:21:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 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 95 [2021-10-08 16:21:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:04,029 INFO L225 Difference]: With dead ends: 12904 [2021-10-08 16:21:04,029 INFO L226 Difference]: Without dead ends: 11044 [2021-10-08 16:21:04,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3549.7ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:21:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-10-08 16:21:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5892. [2021-10-08 16:21:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5892 states, 5877 states have (on average 3.8795303726391017) internal successors, (22800), 5891 states have internal predecessors, (22800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 22800 transitions. [2021-10-08 16:21:04,175 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 22800 transitions. Word has length 95 [2021-10-08 16:21:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:04,175 INFO L470 AbstractCegarLoop]: Abstraction has 5892 states and 22800 transitions. [2021-10-08 16:21:04,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 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 16:21:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 22800 transitions. [2021-10-08 16:21:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-08 16:21:04,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:04,185 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2021-10-08 16:21:04,213 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 16:21:04,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:04,385 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:21:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash -434594527, now seen corresponding path program 93 times [2021-10-08 16:21:04,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:04,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132201680] [2021-10-08 16:21:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:04,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:08,304 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 16:21:08,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:08,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132201680] [2021-10-08 16:21:08,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132201680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:08,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725190084] [2021-10-08 16:21:08,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:21:08,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:08,306 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 16:21:08,307 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 16:21:09,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-08 16:21:09,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:09,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-08 16:21:09,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:10,130 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 16:21:10,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725190084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:10,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:10,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-08 16:21:10,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7874206] [2021-10-08 16:21:10,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-08 16:21:10,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-08 16:21:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:21:10,133 INFO L87 Difference]: Start difference. First operand 5892 states and 22800 transitions. Second operand has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 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 16:21:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:16,565 INFO L93 Difference]: Finished difference Result 13040 states and 51036 transitions. [2021-10-08 16:21:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-08 16:21:16,565 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 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 96 [2021-10-08 16:21:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:16,602 INFO L225 Difference]: With dead ends: 13040 [2021-10-08 16:21:16,602 INFO L226 Difference]: Without dead ends: 11160 [2021-10-08 16:21:16,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3712.5ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:21:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-10-08 16:21:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 5952. [2021-10-08 16:21:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5937 states have (on average 3.8794003705575206) internal successors, (23032), 5951 states have internal predecessors, (23032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 23032 transitions. [2021-10-08 16:21:16,757 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 23032 transitions. Word has length 96 [2021-10-08 16:21:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:16,758 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 23032 transitions. [2021-10-08 16:21:16,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 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 16:21:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 23032 transitions. [2021-10-08 16:21:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-08 16:21:16,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:16,768 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2021-10-08 16:21:16,797 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 16:21:16,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:16,969 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:21:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:16,969 INFO L82 PathProgramCache]: Analyzing trace with hash -587527988, now seen corresponding path program 94 times [2021-10-08 16:21:16,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:16,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939214757] [2021-10-08 16:21:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:16,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:20,919 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 16:21:20,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:20,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939214757] [2021-10-08 16:21:20,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939214757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:20,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764484519] [2021-10-08 16:21:20,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:21:20,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:20,921 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 16:21:20,922 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 16:21:22,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:21:22,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:22,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-08 16:21:22,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:22,680 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 16:21:22,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764484519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:22,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:22,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-08 16:21:22,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668049631] [2021-10-08 16:21:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-08 16:21:22,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-08 16:21:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:21:22,683 INFO L87 Difference]: Start difference. First operand 5952 states and 23032 transitions. Second operand has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 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 16:21:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:28,964 INFO L93 Difference]: Finished difference Result 13176 states and 51569 transitions. [2021-10-08 16:21:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-08 16:21:28,965 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 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 97 [2021-10-08 16:21:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:29,003 INFO L225 Difference]: With dead ends: 13176 [2021-10-08 16:21:29,003 INFO L226 Difference]: Without dead ends: 11276 [2021-10-08 16:21:29,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3727.8ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:21:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-10-08 16:21:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 6012. [2021-10-08 16:21:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5997 states have (on average 3.8792729698182424) internal successors, (23264), 6011 states have internal predecessors, (23264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 23264 transitions. [2021-10-08 16:21:29,178 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 23264 transitions. Word has length 97 [2021-10-08 16:21:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:29,178 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 23264 transitions. [2021-10-08 16:21:29,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 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 16:21:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 23264 transitions. [2021-10-08 16:21:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-08 16:21:29,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:29,189 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2021-10-08 16:21:29,219 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 16:21:29,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-08 16:21:29,390 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:21:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1033497983, now seen corresponding path program 95 times [2021-10-08 16:21:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:29,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844248364] [2021-10-08 16:21:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:29,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:33,437 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 16:21:33,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:33,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844248364] [2021-10-08 16:21:33,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844248364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:33,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916102904] [2021-10-08 16:21:33,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:21:33,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:33,440 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 16:21:33,441 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 16:21:35,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-08 16:21:35,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-08 16:21:35,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:35,328 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 16:21:35,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916102904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:35,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:35,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-08 16:21:35,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776095283] [2021-10-08 16:21:35,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-08 16:21:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-08 16:21:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:21:35,332 INFO L87 Difference]: Start difference. First operand 6012 states and 23264 transitions. Second operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 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 16:21:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:42,584 INFO L93 Difference]: Finished difference Result 13312 states and 52102 transitions. [2021-10-08 16:21:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-08 16:21:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 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 98 [2021-10-08 16:21:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:42,620 INFO L225 Difference]: With dead ends: 13312 [2021-10-08 16:21:42,620 INFO L226 Difference]: Without dead ends: 11392 [2021-10-08 16:21:42,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3773.8ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:21:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-10-08 16:21:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 6072. [2021-10-08 16:21:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6057 states have (on average 3.8791480931154037) internal successors, (23496), 6071 states have internal predecessors, (23496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 23496 transitions. [2021-10-08 16:21:42,917 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 23496 transitions. Word has length 98 [2021-10-08 16:21:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:42,917 INFO L470 AbstractCegarLoop]: Abstraction has 6072 states and 23496 transitions. [2021-10-08 16:21:42,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 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 16:21:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 23496 transitions. [2021-10-08 16:21:42,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-08 16:21:42,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:42,927 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2021-10-08 16:21:42,956 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 16:21:43,128 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,SelfDestructingSolverStorable112 [2021-10-08 16:21:43,128 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:21:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1973665940, now seen corresponding path program 96 times [2021-10-08 16:21:43,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:43,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200465417] [2021-10-08 16:21:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:43,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:47,204 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 16:21:47,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:47,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200465417] [2021-10-08 16:21:47,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200465417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:47,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222210529] [2021-10-08 16:21:47,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:21:47,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:47,211 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 16:21:47,218 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 16:21:48,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-08 16:21:48,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:48,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-08 16:21:48,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:49,128 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 16:21:49,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222210529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:49,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:49,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-08 16:21:49,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426066352] [2021-10-08 16:21:49,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-08 16:21:49,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-08 16:21:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:21:49,131 INFO L87 Difference]: Start difference. First operand 6072 states and 23496 transitions. Second operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 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 16:21:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:56,103 INFO L93 Difference]: Finished difference Result 13448 states and 52635 transitions. [2021-10-08 16:21:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-08 16:21:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 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 99 [2021-10-08 16:21:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:56,139 INFO L225 Difference]: With dead ends: 13448 [2021-10-08 16:21:56,139 INFO L226 Difference]: Without dead ends: 11508 [2021-10-08 16:21:56,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3859.2ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:21:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2021-10-08 16:21:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 6132. [2021-10-08 16:21:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6117 states have (on average 3.87902566617623) internal successors, (23728), 6131 states have internal predecessors, (23728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 23728 transitions. [2021-10-08 16:21:56,406 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 23728 transitions. Word has length 99 [2021-10-08 16:21:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:56,406 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 23728 transitions. [2021-10-08 16:21:56,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 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 16:21:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 23728 transitions. [2021-10-08 16:21:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-08 16:21:56,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:56,417 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2021-10-08 16:21:56,447 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 16:21:56,623 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,SelfDestructingSolverStorable113 [2021-10-08 16:21:56,623 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:21:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1054101535, now seen corresponding path program 97 times [2021-10-08 16:21:56,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:56,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395766700] [2021-10-08 16:21:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:56,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:00,835 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 16:22:00,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:00,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395766700] [2021-10-08 16:22:00,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395766700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:00,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097836931] [2021-10-08 16:22:00,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:22:00,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:00,838 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 16:22:00,839 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 16:22:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:02,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-08 16:22:02,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:02,704 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 16:22:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097836931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:02,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:02,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-08 16:22:02,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234982311] [2021-10-08 16:22:02,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-08 16:22:02,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-08 16:22:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:22:02,709 INFO L87 Difference]: Start difference. First operand 6132 states and 23728 transitions. Second operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 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 16:22:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:10,449 INFO L93 Difference]: Finished difference Result 13584 states and 53168 transitions. [2021-10-08 16:22:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-08 16:22:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 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 100 [2021-10-08 16:22:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:10,487 INFO L225 Difference]: With dead ends: 13584 [2021-10-08 16:22:10,487 INFO L226 Difference]: Without dead ends: 11624 [2021-10-08 16:22:10,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3989.3ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:22:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2021-10-08 16:22:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 6192. [2021-10-08 16:22:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6177 states have (on average 3.878905617613728) internal successors, (23960), 6191 states have internal predecessors, (23960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 23960 transitions. [2021-10-08 16:22:10,655 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 23960 transitions. Word has length 100 [2021-10-08 16:22:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 23960 transitions. [2021-10-08 16:22:10,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 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 16:22:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 23960 transitions. [2021-10-08 16:22:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-08 16:22:10,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:10,670 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2021-10-08 16:22:10,714 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 16:22:10,884 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,SelfDestructingSolverStorable114 [2021-10-08 16:22:10,885 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:22:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:10,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1682591244, now seen corresponding path program 98 times [2021-10-08 16:22:10,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:10,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381786922] [2021-10-08 16:22:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:10,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:15,157 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 16:22:15,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:15,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381786922] [2021-10-08 16:22:15,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381786922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:15,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029726958] [2021-10-08 16:22:15,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:22:15,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:15,160 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 16:22:15,160 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 16:22:16,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:22:16,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-08 16:22:16,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:17,043 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 16:22:17,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029726958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:17,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:17,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-08 16:22:17,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972464799] [2021-10-08 16:22:17,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-08 16:22:17,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-08 16:22:17,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:22:17,049 INFO L87 Difference]: Start difference. First operand 6192 states and 23960 transitions. Second operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 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 16:22:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:24,472 INFO L93 Difference]: Finished difference Result 13720 states and 53701 transitions. [2021-10-08 16:22:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-08 16:22:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 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 101 [2021-10-08 16:22:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:24,529 INFO L225 Difference]: With dead ends: 13720 [2021-10-08 16:22:24,530 INFO L226 Difference]: Without dead ends: 11740 [2021-10-08 16:22:24,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4046.5ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:22:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2021-10-08 16:22:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 6252. [2021-10-08 16:22:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6237 states have (on average 3.878787878787879) internal successors, (24192), 6251 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 24192 transitions. [2021-10-08 16:22:24,705 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 24192 transitions. Word has length 101 [2021-10-08 16:22:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:24,705 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 24192 transitions. [2021-10-08 16:22:24,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 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 16:22:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 24192 transitions. [2021-10-08 16:22:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-08 16:22:24,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:24,715 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2021-10-08 16:22:24,745 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 16:22:24,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:24,916 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:22:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 620721473, now seen corresponding path program 99 times [2021-10-08 16:22:24,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:24,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755418244] [2021-10-08 16:22:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:24,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:29,243 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 16:22:29,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:29,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755418244] [2021-10-08 16:22:29,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755418244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:29,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001565254] [2021-10-08 16:22:29,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:22:29,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:29,246 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 16:22:29,246 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 16:22:31,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-08 16:22:31,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:31,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-08 16:22:31,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:31,387 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 16:22:31,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001565254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:31,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:31,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-08 16:22:31,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628351784] [2021-10-08 16:22:31,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-08 16:22:31,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-08 16:22:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:22:31,391 INFO L87 Difference]: Start difference. First operand 6252 states and 24192 transitions. Second operand has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 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 16:22:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:39,157 INFO L93 Difference]: Finished difference Result 13856 states and 54234 transitions. [2021-10-08 16:22:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-08 16:22:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 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 102 [2021-10-08 16:22:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:39,197 INFO L225 Difference]: With dead ends: 13856 [2021-10-08 16:22:39,197 INFO L226 Difference]: Without dead ends: 11856 [2021-10-08 16:22:39,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 4093.6ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:22:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-10-08 16:22:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6312. [2021-10-08 16:22:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6312 states, 6297 states have (on average 3.8786723836747656) internal successors, (24424), 6311 states have internal predecessors, (24424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 24424 transitions. [2021-10-08 16:22:39,518 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 24424 transitions. Word has length 102 [2021-10-08 16:22:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:39,519 INFO L470 AbstractCegarLoop]: Abstraction has 6312 states and 24424 transitions. [2021-10-08 16:22:39,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 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 16:22:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 24424 transitions. [2021-10-08 16:22:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-08 16:22:39,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:39,532 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2021-10-08 16:22:39,565 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 16:22:39,744 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,SelfDestructingSolverStorable116 [2021-10-08 16:22:39,745 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:22:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2062496940, now seen corresponding path program 100 times [2021-10-08 16:22:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:39,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119426619] [2021-10-08 16:22:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:39,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:44,187 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 16:22:44,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:44,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119426619] [2021-10-08 16:22:44,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119426619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:44,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509683255] [2021-10-08 16:22:44,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:22:44,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:44,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:44,189 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 16:22:44,190 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 16:22:45,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:22:45,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:45,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-08 16:22:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:46,179 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 16:22:46,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509683255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:46,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:46,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-08 16:22:46,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706329778] [2021-10-08 16:22:46,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-08 16:22:46,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-08 16:22:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:22:46,183 INFO L87 Difference]: Start difference. First operand 6312 states and 24424 transitions. Second operand has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 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 16:22:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:54,304 INFO L93 Difference]: Finished difference Result 13992 states and 54767 transitions. [2021-10-08 16:22:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-08 16:22:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 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 103 [2021-10-08 16:22:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:54,340 INFO L225 Difference]: With dead ends: 13992 [2021-10-08 16:22:54,341 INFO L226 Difference]: Without dead ends: 11972 [2021-10-08 16:22:54,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4209.3ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:22:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11972 states. [2021-10-08 16:22:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11972 to 6372. [2021-10-08 16:22:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6372 states, 6357 states have (on average 3.878559068743118) internal successors, (24656), 6371 states have internal predecessors, (24656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 24656 transitions. [2021-10-08 16:22:54,500 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 24656 transitions. Word has length 103 [2021-10-08 16:22:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:54,500 INFO L470 AbstractCegarLoop]: Abstraction has 6372 states and 24656 transitions. [2021-10-08 16:22:54,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 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 16:22:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 24656 transitions. [2021-10-08 16:22:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-08 16:22:54,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:54,510 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2021-10-08 16:22:54,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-08 16:22:54,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:54,711 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:22:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash -487103839, now seen corresponding path program 101 times [2021-10-08 16:22:54,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:54,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487235042] [2021-10-08 16:22:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:54,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:59,330 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 16:22:59,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:59,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487235042] [2021-10-08 16:22:59,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487235042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:59,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245039994] [2021-10-08 16:22:59,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:22:59,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:59,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:59,332 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 16:22:59,333 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 16:23:01,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-08 16:23:01,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-08 16:23:01,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:01,374 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 16:23:01,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245039994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:01,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:01,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-10-08 16:23:01,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052242840] [2021-10-08 16:23:01,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-08 16:23:01,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-08 16:23:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:23:01,377 INFO L87 Difference]: Start difference. First operand 6372 states and 24656 transitions. Second operand has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 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 16:23:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:09,553 INFO L93 Difference]: Finished difference Result 14128 states and 55300 transitions. [2021-10-08 16:23:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-08 16:23:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 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 104 [2021-10-08 16:23:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:09,592 INFO L225 Difference]: With dead ends: 14128 [2021-10-08 16:23:09,592 INFO L226 Difference]: Without dead ends: 12088 [2021-10-08 16:23:09,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4383.2ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:23:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12088 states. [2021-10-08 16:23:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12088 to 6432. [2021-10-08 16:23:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6432 states, 6417 states have (on average 3.8784478728377745) internal successors, (24888), 6431 states have internal predecessors, (24888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 24888 transitions. [2021-10-08 16:23:09,767 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 24888 transitions. Word has length 104 [2021-10-08 16:23:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:09,767 INFO L470 AbstractCegarLoop]: Abstraction has 6432 states and 24888 transitions. [2021-10-08 16:23:09,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 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 16:23:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 24888 transitions. [2021-10-08 16:23:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-08 16:23:09,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:09,778 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2021-10-08 16:23:09,808 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 16:23:09,979 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,SelfDestructingSolverStorable118 [2021-10-08 16:23:09,979 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:23:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2079650636, now seen corresponding path program 102 times [2021-10-08 16:23:09,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:09,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143194428] [2021-10-08 16:23:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:09,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:14,605 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 16:23:14,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:14,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143194428] [2021-10-08 16:23:14,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143194428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:14,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948256988] [2021-10-08 16:23:14,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:23:14,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:14,607 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 16:23:14,611 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 16:23:16,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-08 16:23:16,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:16,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-08 16:23:16,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:16,725 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 16:23:16,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948256988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:16,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:16,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2021-10-08 16:23:16,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119886982] [2021-10-08 16:23:16,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-08 16:23:16,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-08 16:23:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:23:16,729 INFO L87 Difference]: Start difference. First operand 6432 states and 24888 transitions. Second operand has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 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 16:23:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:25,381 INFO L93 Difference]: Finished difference Result 14264 states and 55833 transitions. [2021-10-08 16:23:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-08 16:23:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 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 105 [2021-10-08 16:23:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:25,419 INFO L225 Difference]: With dead ends: 14264 [2021-10-08 16:23:25,419 INFO L226 Difference]: Without dead ends: 12204 [2021-10-08 16:23:25,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4386.2ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:23:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12204 states. [2021-10-08 16:23:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12204 to 6492. [2021-10-08 16:23:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6477 states have (on average 3.878338737069631) internal successors, (25120), 6491 states have internal predecessors, (25120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 25120 transitions. [2021-10-08 16:23:25,602 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 25120 transitions. Word has length 105 [2021-10-08 16:23:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:25,602 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 25120 transitions. [2021-10-08 16:23:25,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 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 16:23:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 25120 transitions. [2021-10-08 16:23:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-08 16:23:25,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:25,613 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2021-10-08 16:23:25,643 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 16:23:25,813 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,SelfDestructingSolverStorable119 [2021-10-08 16:23:25,814 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:23:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:25,815 INFO L82 PathProgramCache]: Analyzing trace with hash 44660737, now seen corresponding path program 103 times [2021-10-08 16:23:25,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:25,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231670363] [2021-10-08 16:23:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:25,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:30,586 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 16:23:30,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:30,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231670363] [2021-10-08 16:23:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231670363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:30,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889192884] [2021-10-08 16:23:30,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:23:30,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:30,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:30,588 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 16:23:30,589 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 16:23:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:32,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-08 16:23:32,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:32,735 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 16:23:32,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889192884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:32,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:32,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2021-10-08 16:23:32,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321757245] [2021-10-08 16:23:32,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-08 16:23:32,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-08 16:23:32,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:23:32,741 INFO L87 Difference]: Start difference. First operand 6492 states and 25120 transitions. Second operand has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 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 16:23:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:41,291 INFO L93 Difference]: Finished difference Result 14400 states and 56366 transitions. [2021-10-08 16:23:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-08 16:23:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 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 106 [2021-10-08 16:23:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:41,331 INFO L225 Difference]: With dead ends: 14400 [2021-10-08 16:23:41,331 INFO L226 Difference]: Without dead ends: 12320 [2021-10-08 16:23:41,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4437.6ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:23:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12320 states. [2021-10-08 16:23:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12320 to 6552. [2021-10-08 16:23:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6552 states, 6537 states have (on average 3.8782316047116416) internal successors, (25352), 6551 states have internal predecessors, (25352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6552 states to 6552 states and 25352 transitions. [2021-10-08 16:23:41,505 INFO L78 Accepts]: Start accepts. Automaton has 6552 states and 25352 transitions. Word has length 106 [2021-10-08 16:23:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 6552 states and 25352 transitions. [2021-10-08 16:23:41,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 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 16:23:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6552 states and 25352 transitions. [2021-10-08 16:23:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-08 16:23:41,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:41,518 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2021-10-08 16:23:41,549 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 16:23:41,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:41,719 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:23:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1384483308, now seen corresponding path program 104 times [2021-10-08 16:23:41,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:41,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534660131] [2021-10-08 16:23:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:41,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:46,607 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 16:23:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:46,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534660131] [2021-10-08 16:23:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534660131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:46,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467897891] [2021-10-08 16:23:46,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:23:46,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:46,609 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 16:23:46,751 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 16:23:48,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:23:48,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:48,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-08 16:23:48,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:48,909 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 16:23:48,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467897891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:48,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:48,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2021-10-08 16:23:48,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541110058] [2021-10-08 16:23:48,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-08 16:23:48,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-08 16:23:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:23:48,913 INFO L87 Difference]: Start difference. First operand 6552 states and 25352 transitions. Second operand has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 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 16:23:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:58,190 INFO L93 Difference]: Finished difference Result 14536 states and 56899 transitions. [2021-10-08 16:23:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-08 16:23:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 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 107 [2021-10-08 16:23:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:58,238 INFO L225 Difference]: With dead ends: 14536 [2021-10-08 16:23:58,238 INFO L226 Difference]: Without dead ends: 12436 [2021-10-08 16:23:58,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4654.5ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:23:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2021-10-08 16:23:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 6612. [2021-10-08 16:23:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6597 states have (on average 3.8781264211005) internal successors, (25584), 6611 states have internal predecessors, (25584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 25584 transitions. [2021-10-08 16:23:58,427 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 25584 transitions. Word has length 107 [2021-10-08 16:23:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:58,427 INFO L470 AbstractCegarLoop]: Abstraction has 6612 states and 25584 transitions. [2021-10-08 16:23:58,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 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 16:23:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 25584 transitions. [2021-10-08 16:23:58,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-08 16:23:58,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:58,439 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2021-10-08 16:23:58,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-08 16:23:58,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:58,640 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:23:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash -30689951, now seen corresponding path program 105 times [2021-10-08 16:23:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:58,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663968989] [2021-10-08 16:23:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:58,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:03,819 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 16:24:03,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:03,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663968989] [2021-10-08 16:24:03,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663968989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:03,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386475132] [2021-10-08 16:24:03,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:24:03,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:03,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:03,821 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 16:24:03,822 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 16:24:05,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-08 16:24:05,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:05,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-08 16:24:05,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:06,184 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 16:24:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386475132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:06,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:06,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2021-10-08 16:24:06,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613647567] [2021-10-08 16:24:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-08 16:24:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-08 16:24:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:24:06,188 INFO L87 Difference]: Start difference. First operand 6612 states and 25584 transitions. Second operand has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 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 16:24:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:15,248 INFO L93 Difference]: Finished difference Result 14672 states and 57432 transitions. [2021-10-08 16:24:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-08 16:24:15,249 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 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 108 [2021-10-08 16:24:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:15,289 INFO L225 Difference]: With dead ends: 14672 [2021-10-08 16:24:15,289 INFO L226 Difference]: Without dead ends: 12552 [2021-10-08 16:24:15,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4885.5ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:24:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2021-10-08 16:24:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 6672. [2021-10-08 16:24:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6672 states, 6657 states have (on average 3.878023133543638) internal successors, (25816), 6671 states have internal predecessors, (25816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 25816 transitions. [2021-10-08 16:24:15,585 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 25816 transitions. Word has length 108 [2021-10-08 16:24:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:15,585 INFO L470 AbstractCegarLoop]: Abstraction has 6672 states and 25816 transitions. [2021-10-08 16:24:15,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 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 16:24:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 25816 transitions. [2021-10-08 16:24:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-08 16:24:15,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:15,597 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2021-10-08 16:24:15,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-08 16:24:15,803 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,SelfDestructingSolverStorable122 [2021-10-08 16:24:15,804 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:24:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:15,804 INFO L82 PathProgramCache]: Analyzing trace with hash -951388020, now seen corresponding path program 106 times [2021-10-08 16:24:15,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:15,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735355827] [2021-10-08 16:24:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:15,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:20,758 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 16:24:20,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:20,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735355827] [2021-10-08 16:24:20,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735355827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:20,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190240068] [2021-10-08 16:24:20,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:24:20,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:20,761 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 16:24:20,765 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 16:24:22,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:24:22,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:22,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-08 16:24:22,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:22,931 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 16:24:22,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190240068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:22,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:22,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2021-10-08 16:24:22,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118558975] [2021-10-08 16:24:22,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-08 16:24:22,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-08 16:24:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:24:22,935 INFO L87 Difference]: Start difference. First operand 6672 states and 25816 transitions. Second operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 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 16:24:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:32,402 INFO L93 Difference]: Finished difference Result 14808 states and 57965 transitions. [2021-10-08 16:24:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-08 16:24:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 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 109 [2021-10-08 16:24:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:32,442 INFO L225 Difference]: With dead ends: 14808 [2021-10-08 16:24:32,443 INFO L226 Difference]: Without dead ends: 12668 [2021-10-08 16:24:32,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4709.9ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:24:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12668 states. [2021-10-08 16:24:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12668 to 6732. [2021-10-08 16:24:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 6717 states have (on average 3.8779216912312044) internal successors, (26048), 6731 states have internal predecessors, (26048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 26048 transitions. [2021-10-08 16:24:32,622 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 26048 transitions. Word has length 109 [2021-10-08 16:24:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:32,622 INFO L470 AbstractCegarLoop]: Abstraction has 6732 states and 26048 transitions. [2021-10-08 16:24:32,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 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 16:24:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 26048 transitions. [2021-10-08 16:24:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-08 16:24:32,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:32,635 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2021-10-08 16:24:32,664 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 16:24:32,835 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,SelfDestructingSolverStorable123 [2021-10-08 16:24:32,836 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:24:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:32,836 INFO L82 PathProgramCache]: Analyzing trace with hash 571742913, now seen corresponding path program 107 times [2021-10-08 16:24:32,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:32,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028245159] [2021-10-08 16:24:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:32,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:37,970 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 16:24:37,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:37,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028245159] [2021-10-08 16:24:37,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028245159] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:37,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883910118] [2021-10-08 16:24:37,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:24:37,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:37,973 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 16:24:37,974 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 16:24:40,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-08 16:24:40,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:40,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-08 16:24:40,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:40,283 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 16:24:40,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883910118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:40,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:40,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2021-10-08 16:24:40,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498987908] [2021-10-08 16:24:40,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-08 16:24:40,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-08 16:24:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:24:40,287 INFO L87 Difference]: Start difference. First operand 6732 states and 26048 transitions. Second operand has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 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 16:24:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:49,979 INFO L93 Difference]: Finished difference Result 14944 states and 58498 transitions. [2021-10-08 16:24:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-08 16:24:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 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 110 [2021-10-08 16:24:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:50,020 INFO L225 Difference]: With dead ends: 14944 [2021-10-08 16:24:50,020 INFO L226 Difference]: Without dead ends: 12784 [2021-10-08 16:24:50,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4891.3ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:24:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12784 states. [2021-10-08 16:24:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12784 to 6792. [2021-10-08 16:24:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6777 states have (on average 3.8778220451527226) internal successors, (26280), 6791 states have internal predecessors, (26280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 26280 transitions. [2021-10-08 16:24:50,199 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 26280 transitions. Word has length 110 [2021-10-08 16:24:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:50,199 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 26280 transitions. [2021-10-08 16:24:50,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 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 16:24:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 26280 transitions. [2021-10-08 16:24:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-08 16:24:50,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:50,211 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2021-10-08 16:24:50,243 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 16:24:50,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-08 16:24:50,412 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:24:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 544161580, now seen corresponding path program 108 times [2021-10-08 16:24:50,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:50,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717859928] [2021-10-08 16:24:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:50,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:55,641 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 16:24:55,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:55,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717859928] [2021-10-08 16:24:55,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717859928] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:55,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466405765] [2021-10-08 16:24:55,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:24:55,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:55,644 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 16:24:55,645 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 16:24:57,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-08 16:24:57,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:57,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-08 16:24:57,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:57,967 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 16:24:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466405765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:57,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:57,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2021-10-08 16:24:57,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837986717] [2021-10-08 16:24:57,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-08 16:24:57,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-08 16:24:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:24:57,972 INFO L87 Difference]: Start difference. First operand 6792 states and 26280 transitions. Second operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 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 16:25:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:08,979 INFO L93 Difference]: Finished difference Result 15080 states and 59031 transitions. [2021-10-08 16:25:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:25:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 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 111 [2021-10-08 16:25:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:09,021 INFO L225 Difference]: With dead ends: 15080 [2021-10-08 16:25:09,021 INFO L226 Difference]: Without dead ends: 12900 [2021-10-08 16:25:09,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4982.6ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:25:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2021-10-08 16:25:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 6852. [2021-10-08 16:25:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6837 states have (on average 3.8777241480181366) internal successors, (26512), 6851 states have internal predecessors, (26512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 26512 transitions. [2021-10-08 16:25:09,265 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 26512 transitions. Word has length 111 [2021-10-08 16:25:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:09,265 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 26512 transitions. [2021-10-08 16:25:09,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 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 16:25:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 26512 transitions. [2021-10-08 16:25:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-08 16:25:09,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:09,277 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2021-10-08 16:25:09,308 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 16:25:09,477 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,SelfDestructingSolverStorable125 [2021-10-08 16:25:09,478 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:25:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:09,479 INFO L82 PathProgramCache]: Analyzing trace with hash -310859743, now seen corresponding path program 109 times [2021-10-08 16:25:09,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:09,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963081072] [2021-10-08 16:25:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:09,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:14,891 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 16:25:14,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:14,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963081072] [2021-10-08 16:25:14,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963081072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:14,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177712489] [2021-10-08 16:25:14,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:25:14,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:14,893 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 16:25:14,894 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 16:25:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-08 16:25:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:17,263 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 16:25:17,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177712489] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:17,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2021-10-08 16:25:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50682143] [2021-10-08 16:25:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-08 16:25:17,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-08 16:25:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:25:17,268 INFO L87 Difference]: Start difference. First operand 6852 states and 26512 transitions. Second operand has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 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 16:25:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:27,959 INFO L93 Difference]: Finished difference Result 15216 states and 59564 transitions. [2021-10-08 16:25:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-08 16:25:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 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 112 [2021-10-08 16:25:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:28,003 INFO L225 Difference]: With dead ends: 15216 [2021-10-08 16:25:28,003 INFO L226 Difference]: Without dead ends: 13016 [2021-10-08 16:25:28,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 5160.3ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:25:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13016 states. [2021-10-08 16:25:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13016 to 6912. [2021-10-08 16:25:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6897 states have (on average 3.877627954182978) internal successors, (26744), 6911 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 26744 transitions. [2021-10-08 16:25:28,209 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 26744 transitions. Word has length 112 [2021-10-08 16:25:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:28,209 INFO L470 AbstractCegarLoop]: Abstraction has 6912 states and 26744 transitions. [2021-10-08 16:25:28,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 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 16:25:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 26744 transitions. [2021-10-08 16:25:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-08 16:25:28,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:28,222 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2021-10-08 16:25:28,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2021-10-08 16:25:28,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:28,430 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:25:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1046716980, now seen corresponding path program 110 times [2021-10-08 16:25:28,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:28,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275435494] [2021-10-08 16:25:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:28,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,770 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 16:25:33,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275435494] [2021-10-08 16:25:33,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275435494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:33,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070168502] [2021-10-08 16:25:33,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:25:33,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:33,772 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 16:25:33,773 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 16:25:35,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:25:35,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-08 16:25:35,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:36,155 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 16:25:36,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070168502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:36,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:36,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2021-10-08 16:25:36,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569261799] [2021-10-08 16:25:36,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-08 16:25:36,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-08 16:25:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:25:36,161 INFO L87 Difference]: Start difference. First operand 6912 states and 26744 transitions. Second operand has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 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 16:25:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:47,335 INFO L93 Difference]: Finished difference Result 15352 states and 60097 transitions. [2021-10-08 16:25:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-08 16:25:47,335 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 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 113 [2021-10-08 16:25:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:47,379 INFO L225 Difference]: With dead ends: 15352 [2021-10-08 16:25:47,380 INFO L226 Difference]: Without dead ends: 13132 [2021-10-08 16:25:47,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 5081.6ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:25:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2021-10-08 16:25:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 6972. [2021-10-08 16:25:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6957 states have (on average 3.877533419577404) internal successors, (26976), 6971 states have internal predecessors, (26976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 26976 transitions. [2021-10-08 16:25:47,578 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 26976 transitions. Word has length 113 [2021-10-08 16:25:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:47,578 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 26976 transitions. [2021-10-08 16:25:47,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 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 16:25:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 26976 transitions. [2021-10-08 16:25:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-08 16:25:47,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:47,593 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2021-10-08 16:25:47,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-08 16:25:47,798 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,SelfDestructingSolverStorable127 [2021-10-08 16:25:47,799 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:25:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:47,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1911512449, now seen corresponding path program 111 times [2021-10-08 16:25:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:47,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472868934] [2021-10-08 16:25:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:47,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:53,248 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 16:25:53,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:53,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472868934] [2021-10-08 16:25:53,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472868934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:53,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42639639] [2021-10-08 16:25:53,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:25:53,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:53,250 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 16:25:53,251 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 16:25:55,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-08 16:25:55,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:55,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-08 16:25:55,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:55,929 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 16:25:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42639639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:55,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:55,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2021-10-08 16:25:55,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465706081] [2021-10-08 16:25:55,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-08 16:25:55,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-08 16:25:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:25:55,932 INFO L87 Difference]: Start difference. First operand 6972 states and 26976 transitions. Second operand has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 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 16:26:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:07,009 INFO L93 Difference]: Finished difference Result 15488 states and 60630 transitions. [2021-10-08 16:26:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-08 16:26:07,010 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 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 114 [2021-10-08 16:26:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:07,057 INFO L225 Difference]: With dead ends: 15488 [2021-10-08 16:26:07,057 INFO L226 Difference]: Without dead ends: 13248 [2021-10-08 16:26:07,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 5191.7ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:26:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13248 states. [2021-10-08 16:26:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13248 to 7032. [2021-10-08 16:26:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7017 states have (on average 3.877440501638877) internal successors, (27208), 7031 states have internal predecessors, (27208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 27208 transitions. [2021-10-08 16:26:07,252 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 27208 transitions. Word has length 114 [2021-10-08 16:26:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:07,252 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 27208 transitions. [2021-10-08 16:26:07,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 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 16:26:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 27208 transitions. [2021-10-08 16:26:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-08 16:26:07,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:07,265 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2021-10-08 16:26:07,297 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 16:26:07,466 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,SelfDestructingSolverStorable128 [2021-10-08 16:26:07,466 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:26:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash -872655764, now seen corresponding path program 112 times [2021-10-08 16:26:07,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:07,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177366810] [2021-10-08 16:26:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:07,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:12,978 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 16:26:12,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:12,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177366810] [2021-10-08 16:26:12,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177366810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:12,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672290213] [2021-10-08 16:26:12,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:26:12,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:12,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:12,983 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 16:26:13,003 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 16:26:15,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:26:15,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:26:15,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-08 16:26:15,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:15,342 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 16:26:15,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672290213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:15,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:26:15,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2021-10-08 16:26:15,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734496136] [2021-10-08 16:26:15,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-08 16:26:15,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:26:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-08 16:26:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:26:15,347 INFO L87 Difference]: Start difference. First operand 7032 states and 27208 transitions. Second operand has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 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 16:26:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:26,513 INFO L93 Difference]: Finished difference Result 15624 states and 61163 transitions. [2021-10-08 16:26:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-08 16:26:26,513 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 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 115 [2021-10-08 16:26:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:26,557 INFO L225 Difference]: With dead ends: 15624 [2021-10-08 16:26:26,557 INFO L226 Difference]: Without dead ends: 13364 [2021-10-08 16:26:26,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 5245.5ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:26:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13364 states. [2021-10-08 16:26:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13364 to 7092. [2021-10-08 16:26:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7077 states have (on average 3.877349159248269) internal successors, (27440), 7091 states have internal predecessors, (27440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 27440 transitions. [2021-10-08 16:26:26,745 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 27440 transitions. Word has length 115 [2021-10-08 16:26:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:26,745 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 27440 transitions. [2021-10-08 16:26:26,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 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 16:26:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 27440 transitions. [2021-10-08 16:26:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-08 16:26:26,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:26,757 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2021-10-08 16:26:26,788 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 16:26:26,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:26,958 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:26:26,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:26,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1282524447, now seen corresponding path program 113 times [2021-10-08 16:26:26,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:26,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328334166] [2021-10-08 16:26:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:26,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:32,547 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 16:26:32,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:32,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328334166] [2021-10-08 16:26:32,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328334166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:32,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216076652] [2021-10-08 16:26:32,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:26:32,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:32,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:32,549 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 16:26:32,550 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 16:26:34,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-08 16:26:34,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:26:34,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-08 16:26:34,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:35,076 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 16:26:35,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216076652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:35,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:26:35,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2021-10-08 16:26:35,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999015656] [2021-10-08 16:26:35,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-08 16:26:35,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:26:35,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-08 16:26:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:26:35,081 INFO L87 Difference]: Start difference. First operand 7092 states and 27440 transitions. Second operand has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 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 16:26:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:46,488 INFO L93 Difference]: Finished difference Result 15760 states and 61696 transitions. [2021-10-08 16:26:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-08 16:26:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 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 116 [2021-10-08 16:26:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:46,538 INFO L225 Difference]: With dead ends: 15760 [2021-10-08 16:26:46,538 INFO L226 Difference]: Without dead ends: 13480 [2021-10-08 16:26:46,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5323.3ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:26:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2021-10-08 16:26:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 7152. [2021-10-08 16:26:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 7137 states have (on average 3.8772593526691885) internal successors, (27672), 7151 states have internal predecessors, (27672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 27672 transitions. [2021-10-08 16:26:46,720 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 27672 transitions. Word has length 116 [2021-10-08 16:26:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:46,720 INFO L470 AbstractCegarLoop]: Abstraction has 7152 states and 27672 transitions. [2021-10-08 16:26:46,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 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 16:26:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 27672 transitions. [2021-10-08 16:26:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-08 16:26:46,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:46,733 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2021-10-08 16:26:46,765 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 16:26:46,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:46,941 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:26:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1103551732, now seen corresponding path program 114 times [2021-10-08 16:26:46,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:46,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033230089] [2021-10-08 16:26:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:46,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:52,673 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 16:26:52,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:52,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033230089] [2021-10-08 16:26:52,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033230089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:52,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688219869] [2021-10-08 16:26:52,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:26:52,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:52,680 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 16:26:52,682 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 Received shutdown request... [2021-10-08 16:26:54,634 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:26:54,647 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 16:26:54,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-08 16:26:54,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:26:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-08 16:26:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:54,921 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-08 16:26:54,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:54,956 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 16:26:55,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:55,124 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. [2021-10-08 16:26:55,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:26:55,129 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,130 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,131 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,132 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,132 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:26:55,138 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:26:55,138 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:26:55,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:26:55 BasicIcfg [2021-10-08 16:26:55,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:26:55,140 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:26:55,142 INFO L168 Benchmark]: Toolchain (without parser) took 757532.44 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 126.4 MB in the beginning and 573.5 MB in the end (delta: -447.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,142 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:26:55,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.87 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,143 INFO L168 Benchmark]: Boogie Preprocessor took 70.61 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,144 INFO L168 Benchmark]: RCFGBuilder took 1175.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 119.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,144 INFO L168 Benchmark]: TraceAbstraction took 755875.62 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 118.8 MB in the beginning and 573.5 MB in the end (delta: -454.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-10-08 16:26:55,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.87 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.61 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1175.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 119.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 755875.62 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 118.8 MB in the beginning and 573.5 MB in the end (delta: -454.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6683.7ms, 141 PlacesBefore, 54 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 124 TotalNumberOfCompositions, 3550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3550, positive: 3550, positive conditional: 0, positive unconditional: 3550, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3550, positive: 2227, positive conditional: 0, positive unconditional: 2227, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1323, unknown conditional: 0, unknown unconditional: 1323] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, 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: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 169 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 755650.5ms, OverallIterations: 132, TraceHistogramMax: 114, EmptinessCheckTime: 819.9ms, AutomataDifference: 355192.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6915.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15947 SDtfs, 380201 SDslu, 151477 SDs, 0 SdLazy, 29280 SolverSat, 73848 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39992.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13331 GetRequests, 6623 SyntacticMatches, 0 SemanticMatches, 6708 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12664 ImplicationChecksByTransitivity, 209504.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7152occurred in iteration=131, InterpolantAutomatonStates: 6841, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17553.6ms AutomataMinimizationTime, 131 MinimizatonAttempts, 393844 StatesRemovedByMinimization, 127 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2434.5ms SsaConstructionTime, 14575.0ms SatisfiabilityAnalysisTime, 240854.7ms InterpolantComputationTime, 13780 NumberOfCodeBlocks, 13768 NumberOfCodeBlocksAsserted, 1926 NumberOfCheckSat, 13526 ConstructedInterpolants, 0 QuantifiedInterpolants, 40570 SizeOfPredicates, 15 NumberOfNonLiveVariables, 67329 ConjunctsInSsa, 6835 ConjunctsInUnsatCore, 254 InterpolantComputations, 14 PerfectInterpolantSequences, 30/493867 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