/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/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:45:11,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:45:11,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:45:11,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 19:45:11,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:45:11,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:45:11,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:45:11,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 19:45:11,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:45:11,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:45:11,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:45:11,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:45:11,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:45:11,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:45:11,414 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:45:11,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:45:11,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:45:11,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:45:11,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:45:11,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:45:11,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:45:11,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:45:11,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:45:11,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:45:11,417 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:45:11,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:45:11,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:45:11,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:45:11,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:45:11,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:45:11,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:45:11,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:45:11,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:45:11,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:45:11,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:45:11,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:45:11,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:45:11,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:45:11,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:45:11,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:45:11,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:45:11,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:45:11,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:45:11,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:45:11,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:45:11,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:45:11,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-13 19:45:12,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8482d188a/823adea1d0a74a529bd5498b6cd55b91/FLAGdb2fe5747 [2021-10-13 19:45:12,579 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:45:12,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-13 19:45:12,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8482d188a/823adea1d0a74a529bd5498b6cd55b91/FLAGdb2fe5747 [2021-10-13 19:45:12,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8482d188a/823adea1d0a74a529bd5498b6cd55b91 [2021-10-13 19:45:12,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:45:12,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:45:12,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:45:12,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:45:12,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:45:12,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2021-10-13 19:45:12,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e2351f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12, skipping insertion in model container [2021-10-13 19:45:12,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2021-10-13 19:45:12,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:45:13,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:45:13,281 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/test-easy11.wvr.c[1893,1906] [2021-10-13 19:45:13,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:45:13,296 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:45:13,340 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/test-easy11.wvr.c[1893,1906] [2021-10-13 19:45:13,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:45:13,367 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:45:13,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13 WrapperNode [2021-10-13 19:45:13,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:45:13,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:45:13,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:45:13,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:45:13,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:45:13,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:45:13,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:45:13,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:45:13,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:45:13,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:45:13,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:45:13,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:45:13,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 19:45:13,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:45:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:13,592 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) [2021-10-13 19:45:13,614 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 [2021-10-13 19:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:45:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:45:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:45:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:45:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:45:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:45:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:45:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:45:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:45:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:45:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:45:13,671 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:45:14,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:45:14,057 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 19:45:14,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:14 BoogieIcfgContainer [2021-10-13 19:45:14,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:45:14,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:45:14,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:45:14,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:45:14,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:12" (1/3) ... [2021-10-13 19:45:14,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db70199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:14, skipping insertion in model container [2021-10-13 19:45:14,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (2/3) ... [2021-10-13 19:45:14,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db70199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:14, skipping insertion in model container [2021-10-13 19:45:14,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:14" (3/3) ... [2021-10-13 19:45:14,069 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2021-10-13 19:45:14,075 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:45:14,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:45:14,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 19:45:14,076 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:45:14,130 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,131 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,131 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,131 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,131 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,132 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,132 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,132 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,132 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,133 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,134 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,134 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,134 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,134 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,135 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,139 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,139 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,140 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,141 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,146 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,155 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,155 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,156 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,156 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,156 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,158 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,166 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,167 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,170 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,171 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,179 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,188 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,188 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,188 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,189 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:45:14,210 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 19:45:14,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:45:14,299 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 [2021-10-13 19:45:14,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-13 19:45:14,328 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:45:14,341 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions, 204 flow [2021-10-13 19:45:14,345 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 94 transitions, 204 flow [2021-10-13 19:45:14,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2021-10-13 19:45:14,422 INFO L129 PetriNetUnfolder]: 6/92 cut-off events. [2021-10-13 19:45:14,422 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 19:45:14,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-10-13 19:45:14,431 INFO L116 LiptonReduction]: Number of co-enabled transitions 1292 [2021-10-13 19:45:17,425 INFO L131 LiptonReduction]: Checked pairs total: 2468 [2021-10-13 19:45:17,426 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-10-13 19:45:17,438 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 29 transitions, 74 flow [2021-10-13 19:45:17,484 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:45:17,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:17,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:45:17,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 11153737, now seen corresponding path program 1 times [2021-10-13 19:45:17,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:17,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042690069] [2021-10-13 19:45:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:17,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:17,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:17,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042690069] [2021-10-13 19:45:17,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042690069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:17,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:17,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:45:17,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816623408] [2021-10-13 19:45:17,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 19:45:17,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 19:45:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:45:17,791 INFO L87 Difference]: Start difference. First operand has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 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 2 states, 1 states have (on average 4.0) 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) [2021-10-13 19:45:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:17,833 INFO L93 Difference]: Finished difference Result 150 states and 358 transitions. [2021-10-13 19:45:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 19:45:17,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:45:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:17,856 INFO L225 Difference]: With dead ends: 150 [2021-10-13 19:45:17,856 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 19:45:17,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:45:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 19:45:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-13 19:45:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 2.651851851851852) internal successors, (358), 149 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2021-10-13 19:45:17,933 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 4 [2021-10-13 19:45:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2021-10-13 19:45:17,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) 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) [2021-10-13 19:45:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2021-10-13 19:45:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:45:17,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:17,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:45:17,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:45:17,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash 11153755, now seen corresponding path program 1 times [2021-10-13 19:45:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:17,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618157654] [2021-10-13 19:45:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:17,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:17,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:17,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618157654] [2021-10-13 19:45:17,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618157654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:17,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:17,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:17,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018265528] [2021-10-13 19:45:17,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,005 INFO L87 Difference]: Start difference. First operand 150 states and 358 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) [2021-10-13 19:45:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,040 INFO L93 Difference]: Finished difference Result 132 states and 314 transitions. [2021-10-13 19:45:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,041 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 [2021-10-13 19:45:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,043 INFO L225 Difference]: With dead ends: 132 [2021-10-13 19:45:18,044 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 19:45:18,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 19:45:18,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-13 19:45:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 121 states have (on average 2.5950413223140494) internal successors, (314), 131 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 314 transitions. [2021-10-13 19:45:18,057 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 314 transitions. Word has length 4 [2021-10-13 19:45:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,058 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 314 transitions. [2021-10-13 19:45:18,058 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) [2021-10-13 19:45:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 314 transitions. [2021-10-13 19:45:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:45:18,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:45:18,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 19:45:18,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash 11153742, now seen corresponding path program 1 times [2021-10-13 19:45:18,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535086754] [2021-10-13 19:45:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535086754] [2021-10-13 19:45:18,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535086754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:18,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905625353] [2021-10-13 19:45:18,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,176 INFO L87 Difference]: Start difference. First operand 132 states and 314 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) [2021-10-13 19:45:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,250 INFO L93 Difference]: Finished difference Result 116 states and 273 transitions. [2021-10-13 19:45:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,251 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 [2021-10-13 19:45:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,254 INFO L225 Difference]: With dead ends: 116 [2021-10-13 19:45:18,255 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 19:45:18,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 19:45:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-13 19:45:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 108 states have (on average 2.5277777777777777) internal successors, (273), 115 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 273 transitions. [2021-10-13 19:45:18,283 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 273 transitions. Word has length 4 [2021-10-13 19:45:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,284 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 273 transitions. [2021-10-13 19:45:18,284 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) [2021-10-13 19:45:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 273 transitions. [2021-10-13 19:45:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:45:18,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:45:18,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 19:45:18,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash 345766191, now seen corresponding path program 1 times [2021-10-13 19:45:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778790258] [2021-10-13 19:45:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778790258] [2021-10-13 19:45:18,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778790258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:18,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164425092] [2021-10-13 19:45:18,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,369 INFO L87 Difference]: Start difference. First operand 116 states and 273 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,417 INFO L93 Difference]: Finished difference Result 100 states and 232 transitions. [2021-10-13 19:45:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:45:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,420 INFO L225 Difference]: With dead ends: 100 [2021-10-13 19:45:18,421 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 19:45:18,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 19:45:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-13 19:45:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 2.442105263157895) internal successors, (232), 99 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 232 transitions. [2021-10-13 19:45:18,434 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 232 transitions. Word has length 5 [2021-10-13 19:45:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,434 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 232 transitions. [2021-10-13 19:45:18,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 232 transitions. [2021-10-13 19:45:18,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:45:18,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 19:45:18,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 19:45:18,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2129953618, now seen corresponding path program 1 times [2021-10-13 19:45:18,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024096167] [2021-10-13 19:45:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024096167] [2021-10-13 19:45:18,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024096167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:18,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106542533] [2021-10-13 19:45:18,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,479 INFO L87 Difference]: Start difference. First operand 100 states and 232 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 19:45:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,497 INFO L93 Difference]: Finished difference Result 88 states and 203 transitions. [2021-10-13 19:45:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-10-13 19:45:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,499 INFO L225 Difference]: With dead ends: 88 [2021-10-13 19:45:18,499 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 19:45:18,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 19:45:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-13 19:45:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.4166666666666665) internal successors, (203), 87 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 203 transitions. [2021-10-13 19:45:18,505 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 203 transitions. Word has length 6 [2021-10-13 19:45:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,505 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 203 transitions. [2021-10-13 19:45:18,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 19:45:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 203 transitions. [2021-10-13 19:45:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:45:18,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 19:45:18,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 19:45:18,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2129953586, now seen corresponding path program 1 times [2021-10-13 19:45:18,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579981496] [2021-10-13 19:45:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579981496] [2021-10-13 19:45:18,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579981496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:18,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398897013] [2021-10-13 19:45:18,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,591 INFO L87 Difference]: Start difference. First operand 88 states and 203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 19:45:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,634 INFO L93 Difference]: Finished difference Result 80 states and 181 transitions. [2021-10-13 19:45:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-10-13 19:45:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,635 INFO L225 Difference]: With dead ends: 80 [2021-10-13 19:45:18,635 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 19:45:18,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 19:45:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-13 19:45:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 2.3815789473684212) internal successors, (181), 79 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 181 transitions. [2021-10-13 19:45:18,642 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 181 transitions. Word has length 6 [2021-10-13 19:45:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,642 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 181 transitions. [2021-10-13 19:45:18,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 19:45:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 181 transitions. [2021-10-13 19:45:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:45:18,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:18,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 19:45:18,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1604051996, now seen corresponding path program 1 times [2021-10-13 19:45:18,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16590824] [2021-10-13 19:45:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16590824] [2021-10-13 19:45:18,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16590824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:18,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282268983] [2021-10-13 19:45:18,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:18,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:18,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,702 INFO L87 Difference]: Start difference. First operand 80 states and 181 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-13 19:45:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:18,734 INFO L93 Difference]: Finished difference Result 72 states and 159 transitions. [2021-10-13 19:45:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:18,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-10-13 19:45:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:18,736 INFO L225 Difference]: With dead ends: 72 [2021-10-13 19:45:18,736 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 19:45:18,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 19:45:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 19:45:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 2.338235294117647) internal successors, (159), 71 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 159 transitions. [2021-10-13 19:45:18,741 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 159 transitions. Word has length 7 [2021-10-13 19:45:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:18,741 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 159 transitions. [2021-10-13 19:45:18,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-13 19:45:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 159 transitions. [2021-10-13 19:45:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:18,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:18,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:18,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 19:45:18,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 381120419, now seen corresponding path program 1 times [2021-10-13 19:45:18,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112418427] [2021-10-13 19:45:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112418427] [2021-10-13 19:45:18,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112418427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:18,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:18,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320272529] [2021-10-13 19:45:18,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:18,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:18,884 INFO L87 Difference]: Start difference. First operand 72 states and 159 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,026 INFO L93 Difference]: Finished difference Result 96 states and 225 transitions. [2021-10-13 19:45:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,028 INFO L225 Difference]: With dead ends: 96 [2021-10-13 19:45:19,028 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 19:45:19,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:45:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 19:45:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2021-10-13 19:45:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-13 19:45:19,034 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 10 [2021-10-13 19:45:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,034 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-13 19:45:19,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-13 19:45:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:19,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 19:45:19,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 379319009, now seen corresponding path program 2 times [2021-10-13 19:45:19,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957010238] [2021-10-13 19:45:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:19,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957010238] [2021-10-13 19:45:19,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957010238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:19,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:19,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:19,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592585391] [2021-10-13 19:45:19,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:19,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:19,113 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,206 INFO L93 Difference]: Finished difference Result 90 states and 211 transitions. [2021-10-13 19:45:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,207 INFO L225 Difference]: With dead ends: 90 [2021-10-13 19:45:19,207 INFO L226 Difference]: Without dead ends: 90 [2021-10-13 19:45:19,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:45:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-13 19:45:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2021-10-13 19:45:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-13 19:45:19,212 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 10 [2021-10-13 19:45:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-13 19:45:19,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-13 19:45:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:19,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 19:45:19,215 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1307682928, now seen corresponding path program 1 times [2021-10-13 19:45:19,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925950030] [2021-10-13 19:45:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:19,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925950030] [2021-10-13 19:45:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925950030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:19,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:19,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:19,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051834231] [2021-10-13 19:45:19,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:19,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:19,291 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,391 INFO L93 Difference]: Finished difference Result 96 states and 226 transitions. [2021-10-13 19:45:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,393 INFO L225 Difference]: With dead ends: 96 [2021-10-13 19:45:19,393 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 19:45:19,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 19:45:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-10-13 19:45:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-13 19:45:19,398 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-13 19:45:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,399 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-13 19:45:19,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-13 19:45:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:19,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 19:45:19,402 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,403 INFO L82 PathProgramCache]: Analyzing trace with hash 507216188, now seen corresponding path program 2 times [2021-10-13 19:45:19,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539258660] [2021-10-13 19:45:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:19,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539258660] [2021-10-13 19:45:19,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539258660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:19,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403566916] [2021-10-13 19:45:19,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:19,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:19,519 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,617 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2021-10-13 19:45:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,619 INFO L225 Difference]: With dead ends: 92 [2021-10-13 19:45:19,619 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 19:45:19,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:45:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 19:45:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-10-13 19:45:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-13 19:45:19,624 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-13 19:45:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,624 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-13 19:45:19,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-13 19:45:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:19,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 19:45:19,626 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,627 INFO L82 PathProgramCache]: Analyzing trace with hash 507187358, now seen corresponding path program 3 times [2021-10-13 19:45:19,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393885964] [2021-10-13 19:45:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:19,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393885964] [2021-10-13 19:45:19,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393885964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:19,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:19,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:19,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088699624] [2021-10-13 19:45:19,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:19,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:19,683 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,804 INFO L93 Difference]: Finished difference Result 108 states and 268 transitions. [2021-10-13 19:45:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,805 INFO L225 Difference]: With dead ends: 108 [2021-10-13 19:45:19,806 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 19:45:19,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:45:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 19:45:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 90. [2021-10-13 19:45:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 2.5697674418604652) internal successors, (221), 89 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 221 transitions. [2021-10-13 19:45:19,811 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 221 transitions. Word has length 10 [2021-10-13 19:45:19,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,811 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 221 transitions. [2021-10-13 19:45:19,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 221 transitions. [2021-10-13 19:45:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:45:19,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 19:45:19,813 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash 497298275, now seen corresponding path program 3 times [2021-10-13 19:45:19,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478679929] [2021-10-13 19:45:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478679929] [2021-10-13 19:45:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478679929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:19,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:19,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:19,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119485385] [2021-10-13 19:45:19,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:19,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:19,869 INFO L87 Difference]: Start difference. First operand 90 states and 221 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,970 INFO L93 Difference]: Finished difference Result 112 states and 278 transitions. [2021-10-13 19:45:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 19:45:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,972 INFO L225 Difference]: With dead ends: 112 [2021-10-13 19:45:19,972 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 19:45:19,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 19:45:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2021-10-13 19:45:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-13 19:45:19,977 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-13 19:45:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,978 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-13 19:45:19,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 19:45:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-13 19:45:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:19,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:19,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 19:45:19,979 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1067175835, now seen corresponding path program 1 times [2021-10-13 19:45:19,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136678650] [2021-10-13 19:45:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136678650] [2021-10-13 19:45:20,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136678650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:20,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:20,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:20,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039175179] [2021-10-13 19:45:20,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:20,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:20,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:20,019 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,094 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2021-10-13 19:45:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:45:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,097 INFO L225 Difference]: With dead ends: 170 [2021-10-13 19:45:20,097 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 19:45:20,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 19:45:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2021-10-13 19:45:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 2.4454545454545453) internal successors, (269), 113 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 269 transitions. [2021-10-13 19:45:20,103 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 269 transitions. Word has length 11 [2021-10-13 19:45:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,104 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 269 transitions. [2021-10-13 19:45:20,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 269 transitions. [2021-10-13 19:45:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:20,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 19:45:20,105 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1068051007, now seen corresponding path program 1 times [2021-10-13 19:45:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310326171] [2021-10-13 19:45:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310326171] [2021-10-13 19:45:20,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310326171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:20,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:20,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:20,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734688869] [2021-10-13 19:45:20,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:20,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:20,152 INFO L87 Difference]: Start difference. First operand 114 states and 269 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,206 INFO L93 Difference]: Finished difference Result 122 states and 281 transitions. [2021-10-13 19:45:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,208 INFO L225 Difference]: With dead ends: 122 [2021-10-13 19:45:20,208 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 19:45:20,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 19:45:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-10-13 19:45:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 2.4285714285714284) internal successors, (272), 115 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 272 transitions. [2021-10-13 19:45:20,214 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 272 transitions. Word has length 11 [2021-10-13 19:45:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,214 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 272 transitions. [2021-10-13 19:45:20,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 272 transitions. [2021-10-13 19:45:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:20,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 19:45:20,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1068069619, now seen corresponding path program 1 times [2021-10-13 19:45:20,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858032427] [2021-10-13 19:45:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858032427] [2021-10-13 19:45:20,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858032427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:20,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:20,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:20,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179909534] [2021-10-13 19:45:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:20,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:20,261 INFO L87 Difference]: Start difference. First operand 116 states and 272 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,327 INFO L93 Difference]: Finished difference Result 122 states and 278 transitions. [2021-10-13 19:45:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,329 INFO L225 Difference]: With dead ends: 122 [2021-10-13 19:45:20,329 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 19:45:20,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 19:45:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-13 19:45:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 2.3363636363636364) internal successors, (257), 113 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 257 transitions. [2021-10-13 19:45:20,335 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 257 transitions. Word has length 11 [2021-10-13 19:45:20,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,335 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 257 transitions. [2021-10-13 19:45:20,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 257 transitions. [2021-10-13 19:45:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:20,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 19:45:20,337 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1070168629, now seen corresponding path program 2 times [2021-10-13 19:45:20,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376965071] [2021-10-13 19:45:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376965071] [2021-10-13 19:45:20,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376965071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:20,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:20,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:20,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496639015] [2021-10-13 19:45:20,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:20,378 INFO L87 Difference]: Start difference. First operand 114 states and 257 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,435 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2021-10-13 19:45:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,437 INFO L225 Difference]: With dead ends: 118 [2021-10-13 19:45:20,437 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 19:45:20,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 19:45:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 19:45:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 2.3295454545454546) internal successors, (205), 91 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 205 transitions. [2021-10-13 19:45:20,442 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 205 transitions. Word has length 11 [2021-10-13 19:45:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,442 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 205 transitions. [2021-10-13 19:45:20,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 205 transitions. [2021-10-13 19:45:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:20,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 19:45:20,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1854219700, now seen corresponding path program 1 times [2021-10-13 19:45:20,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46548970] [2021-10-13 19:45:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46548970] [2021-10-13 19:45:20,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46548970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:20,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581749810] [2021-10-13 19:45:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:20,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:20,511 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) [2021-10-13 19:45:20,521 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 [2021-10-13 19:45:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:45:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:20,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581749810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:20,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:20,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 19:45:20,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203377532] [2021-10-13 19:45:20,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:20,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:20,648 INFO L87 Difference]: Start difference. First operand 92 states and 205 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,744 INFO L93 Difference]: Finished difference Result 202 states and 444 transitions. [2021-10-13 19:45:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:45:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,748 INFO L225 Difference]: With dead ends: 202 [2021-10-13 19:45:20,748 INFO L226 Difference]: Without dead ends: 202 [2021-10-13 19:45:20,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-13 19:45:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 102. [2021-10-13 19:45:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.3877551020408165) internal successors, (234), 101 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 234 transitions. [2021-10-13 19:45:20,754 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 234 transitions. Word has length 11 [2021-10-13 19:45:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,755 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 234 transitions. [2021-10-13 19:45:20,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 234 transitions. [2021-10-13 19:45:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:20,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:20,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:45:20,972 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1852372658, now seen corresponding path program 1 times [2021-10-13 19:45:20,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050799487] [2021-10-13 19:45:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050799487] [2021-10-13 19:45:21,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050799487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:21,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986109111] [2021-10-13 19:45:21,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:21,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:21,006 INFO L87 Difference]: Start difference. First operand 102 states and 234 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,072 INFO L93 Difference]: Finished difference Result 172 states and 375 transitions. [2021-10-13 19:45:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:45:21,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,075 INFO L225 Difference]: With dead ends: 172 [2021-10-13 19:45:21,075 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:45:21,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:45:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 106. [2021-10-13 19:45:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 2.450980392156863) internal successors, (250), 105 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 250 transitions. [2021-10-13 19:45:21,081 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 250 transitions. Word has length 11 [2021-10-13 19:45:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,081 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 250 transitions. [2021-10-13 19:45:21,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 250 transitions. [2021-10-13 19:45:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 19:45:21,083 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1883451398, now seen corresponding path program 2 times [2021-10-13 19:45:21,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882391786] [2021-10-13 19:45:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882391786] [2021-10-13 19:45:21,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882391786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:21,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376837465] [2021-10-13 19:45:21,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:21,117 INFO L87 Difference]: Start difference. First operand 106 states and 250 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,200 INFO L93 Difference]: Finished difference Result 150 states and 329 transitions. [2021-10-13 19:45:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,202 INFO L225 Difference]: With dead ends: 150 [2021-10-13 19:45:21,202 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 19:45:21,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 19:45:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 112. [2021-10-13 19:45:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 2.435185185185185) internal successors, (263), 111 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 263 transitions. [2021-10-13 19:45:21,209 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 263 transitions. Word has length 11 [2021-10-13 19:45:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,209 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 263 transitions. [2021-10-13 19:45:21,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 263 transitions. [2021-10-13 19:45:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 19:45:21,211 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1883464915, now seen corresponding path program 2 times [2021-10-13 19:45:21,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538106995] [2021-10-13 19:45:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538106995] [2021-10-13 19:45:21,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538106995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:21,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442664800] [2021-10-13 19:45:21,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:21,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:21,254 INFO L87 Difference]: Start difference. First operand 112 states and 263 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,315 INFO L93 Difference]: Finished difference Result 114 states and 264 transitions. [2021-10-13 19:45:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,317 INFO L225 Difference]: With dead ends: 114 [2021-10-13 19:45:21,317 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 19:45:21,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 19:45:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-10-13 19:45:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 2.4134615384615383) internal successors, (251), 107 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 251 transitions. [2021-10-13 19:45:21,324 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 251 transitions. Word has length 11 [2021-10-13 19:45:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,324 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 251 transitions. [2021-10-13 19:45:21,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 251 transitions. [2021-10-13 19:45:21,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 19:45:21,326 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1883463985, now seen corresponding path program 3 times [2021-10-13 19:45:21,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887667652] [2021-10-13 19:45:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887667652] [2021-10-13 19:45:21,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887667652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:21,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643268060] [2021-10-13 19:45:21,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:21,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:21,379 INFO L87 Difference]: Start difference. First operand 108 states and 251 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,445 INFO L93 Difference]: Finished difference Result 106 states and 248 transitions. [2021-10-13 19:45:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,447 INFO L225 Difference]: With dead ends: 106 [2021-10-13 19:45:21,447 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 19:45:21,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 19:45:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-10-13 19:45:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 2.4) internal successors, (228), 97 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 228 transitions. [2021-10-13 19:45:21,452 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 228 transitions. Word has length 11 [2021-10-13 19:45:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,453 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 228 transitions. [2021-10-13 19:45:21,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 228 transitions. [2021-10-13 19:45:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 19:45:21,454 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1881378007, now seen corresponding path program 3 times [2021-10-13 19:45:21,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054251903] [2021-10-13 19:45:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054251903] [2021-10-13 19:45:21,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054251903] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:45:21,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443447958] [2021-10-13 19:45:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:21,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:21,501 INFO L87 Difference]: Start difference. First operand 98 states and 228 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,554 INFO L93 Difference]: Finished difference Result 94 states and 221 transitions. [2021-10-13 19:45:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:21,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,555 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:45:21,556 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 19:45:21,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 19:45:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-10-13 19:45:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.423076923076923) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 189 transitions. [2021-10-13 19:45:21,560 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 189 transitions. Word has length 11 [2021-10-13 19:45:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,560 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 189 transitions. [2021-10-13 19:45:21,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 189 transitions. [2021-10-13 19:45:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 19:45:21,562 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1863503353, now seen corresponding path program 2 times [2021-10-13 19:45:21,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748974800] [2021-10-13 19:45:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748974800] [2021-10-13 19:45:21,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748974800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:21,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114886393] [2021-10-13 19:45:21,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:21,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:21,598 INFO L87 Difference]: Start difference. First operand 80 states and 189 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,685 INFO L93 Difference]: Finished difference Result 132 states and 293 transitions. [2021-10-13 19:45:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:21,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,687 INFO L225 Difference]: With dead ends: 132 [2021-10-13 19:45:21,687 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:45:21,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:45:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:45:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 80. [2021-10-13 19:45:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 79 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 187 transitions. [2021-10-13 19:45:21,691 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 187 transitions. Word has length 11 [2021-10-13 19:45:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 187 transitions. [2021-10-13 19:45:21,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 187 transitions. [2021-10-13 19:45:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 19:45:21,693 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1456166670, now seen corresponding path program 3 times [2021-10-13 19:45:21,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640261167] [2021-10-13 19:45:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640261167] [2021-10-13 19:45:21,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640261167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:21,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:21,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498669359] [2021-10-13 19:45:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:21,726 INFO L87 Difference]: Start difference. First operand 80 states and 187 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,785 INFO L93 Difference]: Finished difference Result 132 states and 302 transitions. [2021-10-13 19:45:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:45:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:21,787 INFO L225 Difference]: With dead ends: 132 [2021-10-13 19:45:21,787 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 19:45:21,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 19:45:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 82. [2021-10-13 19:45:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.4) internal successors, (192), 81 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 192 transitions. [2021-10-13 19:45:21,792 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 192 transitions. Word has length 11 [2021-10-13 19:45:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:21,792 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 192 transitions. [2021-10-13 19:45:21,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 192 transitions. [2021-10-13 19:45:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:21,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:21,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:21,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 19:45:21,794 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:21,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1751345942, now seen corresponding path program 2 times [2021-10-13 19:45:21,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:21,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877613429] [2021-10-13 19:45:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:21,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877613429] [2021-10-13 19:45:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877613429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:21,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748053470] [2021-10-13 19:45:21,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:21,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:21,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:21,827 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) [2021-10-13 19:45:21,838 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 [2021-10-13 19:45:21,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:21,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:21,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:45:21,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748053470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:21,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:21,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 19:45:21,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728961521] [2021-10-13 19:45:21,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:21,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:21,931 INFO L87 Difference]: Start difference. First operand 82 states and 192 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:21,999 INFO L93 Difference]: Finished difference Result 116 states and 266 transitions. [2021-10-13 19:45:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:45:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:22,001 INFO L225 Difference]: With dead ends: 116 [2021-10-13 19:45:22,001 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 19:45:22,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 19:45:22,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2021-10-13 19:45:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.4) internal successors, (192), 81 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 192 transitions. [2021-10-13 19:45:22,005 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 192 transitions. Word has length 11 [2021-10-13 19:45:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:22,006 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 192 transitions. [2021-10-13 19:45:22,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 192 transitions. [2021-10-13 19:45:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:22,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:22,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:22,042 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 [2021-10-13 19:45:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 19:45:22,222 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:22,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1749498900, now seen corresponding path program 4 times [2021-10-13 19:45:22,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:22,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095937870] [2021-10-13 19:45:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:22,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095937870] [2021-10-13 19:45:22,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095937870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:22,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:22,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303881403] [2021-10-13 19:45:22,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:22,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:22,280 INFO L87 Difference]: Start difference. First operand 82 states and 192 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:22,340 INFO L93 Difference]: Finished difference Result 124 states and 288 transitions. [2021-10-13 19:45:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:45:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:22,342 INFO L225 Difference]: With dead ends: 124 [2021-10-13 19:45:22,342 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:45:22,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:45:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:45:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 84. [2021-10-13 19:45:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.451219512195122) internal successors, (201), 83 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 201 transitions. [2021-10-13 19:45:22,347 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 201 transitions. Word has length 11 [2021-10-13 19:45:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:22,347 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 201 transitions. [2021-10-13 19:45:22,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 201 transitions. [2021-10-13 19:45:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:22,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:22,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:22,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-13 19:45:22,348 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1780577640, now seen corresponding path program 5 times [2021-10-13 19:45:22,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:22,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757167696] [2021-10-13 19:45:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:22,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757167696] [2021-10-13 19:45:22,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757167696] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:22,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:22,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:22,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029655749] [2021-10-13 19:45:22,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:22,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:22,380 INFO L87 Difference]: Start difference. First operand 84 states and 201 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:22,453 INFO L93 Difference]: Finished difference Result 120 states and 273 transitions. [2021-10-13 19:45:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:22,455 INFO L225 Difference]: With dead ends: 120 [2021-10-13 19:45:22,455 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 19:45:22,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:45:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 19:45:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2021-10-13 19:45:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.426829268292683) internal successors, (199), 83 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 199 transitions. [2021-10-13 19:45:22,459 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 199 transitions. Word has length 11 [2021-10-13 19:45:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:22,459 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 199 transitions. [2021-10-13 19:45:22,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 199 transitions. [2021-10-13 19:45:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:45:22,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:22,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:22,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-13 19:45:22,461 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:22,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1760629595, now seen corresponding path program 3 times [2021-10-13 19:45:22,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:22,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287074424] [2021-10-13 19:45:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:22,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287074424] [2021-10-13 19:45:22,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287074424] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:22,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:22,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:45:22,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79792529] [2021-10-13 19:45:22,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:22,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:45:22,493 INFO L87 Difference]: Start difference. First operand 84 states and 199 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:22,549 INFO L93 Difference]: Finished difference Result 108 states and 244 transitions. [2021-10-13 19:45:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:45:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:22,550 INFO L225 Difference]: With dead ends: 108 [2021-10-13 19:45:22,550 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 19:45:22,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 19:45:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2021-10-13 19:45:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 79 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 183 transitions. [2021-10-13 19:45:22,555 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 183 transitions. Word has length 11 [2021-10-13 19:45:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:22,555 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 183 transitions. [2021-10-13 19:45:22,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 183 transitions. [2021-10-13 19:45:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:22,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:22,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:22,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-13 19:45:22,556 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1046820087, now seen corresponding path program 1 times [2021-10-13 19:45:22,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:22,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416563932] [2021-10-13 19:45:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:22,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416563932] [2021-10-13 19:45:22,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416563932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:22,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801921448] [2021-10-13 19:45:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:22,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:22,620 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) [2021-10-13 19:45:22,628 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 [2021-10-13 19:45:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:22,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801921448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:22,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:22,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:22,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032549812] [2021-10-13 19:45:22,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:22,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:22,850 INFO L87 Difference]: Start difference. First operand 80 states and 183 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:23,080 INFO L93 Difference]: Finished difference Result 94 states and 214 transitions. [2021-10-13 19:45:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:45:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 12 [2021-10-13 19:45:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:23,082 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:45:23,082 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 19:45:23,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 19:45:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 19:45:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 2.210526315789474) internal successors, (168), 77 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 168 transitions. [2021-10-13 19:45:23,088 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 168 transitions. Word has length 12 [2021-10-13 19:45:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:23,089 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 168 transitions. [2021-10-13 19:45:23,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 168 transitions. [2021-10-13 19:45:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:23,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:23,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:23,134 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 [2021-10-13 19:45:23,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:23,303 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1105655607, now seen corresponding path program 2 times [2021-10-13 19:45:23,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:23,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782457304] [2021-10-13 19:45:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:23,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:23,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:23,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782457304] [2021-10-13 19:45:23,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782457304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:23,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818180197] [2021-10-13 19:45:23,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:23,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:23,358 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) [2021-10-13 19:45:23,402 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 [2021-10-13 19:45:23,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:23,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:23,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:23,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:23,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818180197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:23,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:23,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:23,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638864415] [2021-10-13 19:45:23,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:23,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:23,611 INFO L87 Difference]: Start difference. First operand 78 states and 168 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:23,918 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2021-10-13 19:45:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:45:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 12 [2021-10-13 19:45:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:23,919 INFO L225 Difference]: With dead ends: 82 [2021-10-13 19:45:23,919 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 19:45:23,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 252.0ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:45:23,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 19:45:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-13 19:45:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 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) [2021-10-13 19:45:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 107 transitions. [2021-10-13 19:45:23,922 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 107 transitions. Word has length 12 [2021-10-13 19:45:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:23,923 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 107 transitions. [2021-10-13 19:45:23,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 107 transitions. [2021-10-13 19:45:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:23,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:23,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:23,961 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 [2021-10-13 19:45:24,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:24,132 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1833863952, now seen corresponding path program 1 times [2021-10-13 19:45:24,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:24,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229866382] [2021-10-13 19:45:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:24,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:24,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:24,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229866382] [2021-10-13 19:45:24,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229866382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:24,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229443105] [2021-10-13 19:45:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:24,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:24,233 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) [2021-10-13 19:45:24,260 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 [2021-10-13 19:45:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:24,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:24,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:24,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229443105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:24,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:24,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:24,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255715221] [2021-10-13 19:45:24,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:24,474 INFO L87 Difference]: Start difference. First operand 46 states and 107 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:24,644 INFO L93 Difference]: Finished difference Result 56 states and 132 transitions. [2021-10-13 19:45:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 12 [2021-10-13 19:45:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:24,645 INFO L225 Difference]: With dead ends: 56 [2021-10-13 19:45:24,645 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 19:45:24,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:45:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 19:45:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 19:45:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 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) [2021-10-13 19:45:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 85 transitions. [2021-10-13 19:45:24,648 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 85 transitions. Word has length 12 [2021-10-13 19:45:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:24,649 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 85 transitions. [2021-10-13 19:45:24,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 85 transitions. [2021-10-13 19:45:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:24,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:24,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:24,682 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 [2021-10-13 19:45:24,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:24,860 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:24,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1615143406, now seen corresponding path program 2 times [2021-10-13 19:45:24,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:24,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404598117] [2021-10-13 19:45:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:24,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:24,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:24,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404598117] [2021-10-13 19:45:24,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404598117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:24,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078515610] [2021-10-13 19:45:24,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:24,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:24,925 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) [2021-10-13 19:45:24,927 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 [2021-10-13 19:45:24,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:24,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:24,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:25,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:25,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078515610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:25,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:25,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:25,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476081555] [2021-10-13 19:45:25,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:25,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:25,126 INFO L87 Difference]: Start difference. First operand 40 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:25,285 INFO L93 Difference]: Finished difference Result 56 states and 123 transitions. [2021-10-13 19:45:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:45:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 12 [2021-10-13 19:45:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:25,286 INFO L225 Difference]: With dead ends: 56 [2021-10-13 19:45:25,286 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 19:45:25,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:45:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 19:45:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-13 19:45:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 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) [2021-10-13 19:45:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 99 transitions. [2021-10-13 19:45:25,290 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 99 transitions. Word has length 12 [2021-10-13 19:45:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:25,290 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 99 transitions. [2021-10-13 19:45:25,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 99 transitions. [2021-10-13 19:45:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:25,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:25,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:25,327 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 [2021-10-13 19:45:25,498 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,SelfDestructingSolverStorable32 [2021-10-13 19:45:25,499 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1646235166, now seen corresponding path program 3 times [2021-10-13 19:45:25,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:25,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546788777] [2021-10-13 19:45:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:25,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:25,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:25,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546788777] [2021-10-13 19:45:25,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546788777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:25,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912519731] [2021-10-13 19:45:25,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:25,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:25,560 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) [2021-10-13 19:45:25,596 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 [2021-10-13 19:45:25,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:45:25,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:25,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:25,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:25,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912519731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:25,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:25,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 19:45:25,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256282240] [2021-10-13 19:45:25,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:45:25,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:45:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:45:25,769 INFO L87 Difference]: Start difference. First operand 48 states and 99 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2021-10-13 19:45:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:25,918 INFO L93 Difference]: Finished difference Result 52 states and 105 transitions. [2021-10-13 19:45:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:45:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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 12 [2021-10-13 19:45:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:25,920 INFO L225 Difference]: With dead ends: 52 [2021-10-13 19:45:25,920 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 19:45:25,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:45:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 19:45:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-10-13 19:45:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 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) [2021-10-13 19:45:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2021-10-13 19:45:25,923 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 12 [2021-10-13 19:45:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:25,923 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2021-10-13 19:45:25,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2021-10-13 19:45:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2021-10-13 19:45:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:25,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:25,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:25,962 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 [2021-10-13 19:45:26,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:26,125 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:45:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash 144174448, now seen corresponding path program 4 times [2021-10-13 19:45:26,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:26,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184622301] [2021-10-13 19:45:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:26,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:26,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:26,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184622301] [2021-10-13 19:45:26,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184622301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:26,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867476484] [2021-10-13 19:45:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:26,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:26,179 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) [2021-10-13 19:45:26,204 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 [2021-10-13 19:45:26,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:26,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:26,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:26,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:26,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867476484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:26,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:26,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:26,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350709484] [2021-10-13 19:45:26,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:26,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:26,408 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:26,635 INFO L93 Difference]: Finished difference Result 50 states and 108 transitions. [2021-10-13 19:45:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:45:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 12 [2021-10-13 19:45:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:26,636 INFO L225 Difference]: With dead ends: 50 [2021-10-13 19:45:26,636 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 19:45:26,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:45:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 19:45:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 19:45:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 19:45:26,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-13 19:45:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:26,638 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 19:45:26,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2021-10-13 19:45:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 19:45:26,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 19:45:26,642 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,642 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,644 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:45:26,644 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:45:26,644 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,644 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,644 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:45:26,686 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 [2021-10-13 19:45:26,846 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,SelfDestructingSolverStorable34 [2021-10-13 19:45:26,854 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:45:26,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:45:26,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:45:26 BasicIcfg [2021-10-13 19:45:26,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:45:26,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 19:45:26,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 19:45:26,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 19:45:26,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:14" (3/4) ... [2021-10-13 19:45:26,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 19:45:26,865 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 19:45:26,865 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 19:45:26,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 19:45:26,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 19:45:26,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 19:45:26,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 19:45:26,904 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/test-easy11.wvr.c-witness.graphml [2021-10-13 19:45:26,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 19:45:26,906 INFO L168 Benchmark]: Toolchain (without parser) took 13953.28 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.1 MB in the beginning and 133.6 MB in the end (delta: -30.5 MB). Peak memory consumption was 680.4 kB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,906 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 120.6 MB in the end (delta: 105.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:45:26,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.37 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.97 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 91.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,908 INFO L168 Benchmark]: Boogie Preprocessor took 61.55 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 90.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,908 INFO L168 Benchmark]: RCFGBuilder took 571.69 ms. Allocated memory is still 151.0 MB. Free memory was 90.2 MB in the beginning and 123.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,909 INFO L168 Benchmark]: TraceAbstraction took 12794.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.8 MB in the beginning and 135.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,909 INFO L168 Benchmark]: Witness Printer took 47.97 ms. Allocated memory is still 181.4 MB. Free memory was 135.9 MB in the beginning and 133.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:45:26,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 120.6 MB in the end (delta: 105.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.37 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.97 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 91.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.55 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 90.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 571.69 ms. Allocated memory is still 151.0 MB. Free memory was 90.2 MB in the beginning and 123.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12794.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.8 MB in the beginning and 135.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * Witness Printer took 47.97 ms. Allocated memory is still 181.4 MB. Free memory was 135.9 MB in the beginning and 133.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3080.4ms, 95 PlacesBefore, 34 PlacesAfterwards, 94 TransitionsBefore, 29 TransitionsAfterwards, 1292 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, 2468 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1963, positive: 1873, positive conditional: 0, positive unconditional: 1873, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 797, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 797, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1963, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 12569.9ms, OverallIterations: 35, TraceHistogramMax: 1, EmptinessCheckTime: 35.6ms, AutomataDifference: 3446.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3183.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 711 SDtfs, 1222 SDslu, 1297 SDs, 0 SdLazy, 2658 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1649.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1634.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=0, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 243.9ms AutomataMinimizationTime, 35 MinimizatonAttempts, 560 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 107.7ms SsaConstructionTime, 445.4ms SatisfiabilityAnalysisTime, 2442.8ms InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 14 NumberOfNonLiveVariables, 664 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 43 InterpolantComputations, 27 PerfectInterpolantSequences, 8/36 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 19:45:26,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...