/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/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:08:49,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:08:49,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:08:49,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 19:08:49,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:08:49,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:08:49,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:08:49,679 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 19:08:49,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:08:49,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:08:49,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:08:49,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:08:49,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:08:49,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:08:49,738 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:08:49,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:08:49,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:08:49,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:08:49,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:08:49,741 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:08:49,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:08:49,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:08:49,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:08:49,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:08:49,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:08:49,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:08:49,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:08:49,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:08:49,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:08:49,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:08:49,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:08:49,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:08:49,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:08:49,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:08:49,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:08:49,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:08:50,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:08:50,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:08:50,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:08:50,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:08:50,186 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:08:50,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-13 19:08:50,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b5fa804/19ebe0cc15854ddeae7afe8758512b0f/FLAG371f55b73 [2021-10-13 19:08:50,891 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:08:50,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-13 19:08:50,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b5fa804/19ebe0cc15854ddeae7afe8758512b0f/FLAG371f55b73 [2021-10-13 19:08:51,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b5fa804/19ebe0cc15854ddeae7afe8758512b0f [2021-10-13 19:08:51,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:08:51,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:08:51,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:08:51,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:08:51,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:08:51,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f013a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51, skipping insertion in model container [2021-10-13 19:08:51,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:08:51,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:08:51,484 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/loop-tiling-eq.wvr.c[2618,2631] [2021-10-13 19:08:51,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:08:51,501 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:08:51,530 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/loop-tiling-eq.wvr.c[2618,2631] [2021-10-13 19:08:51,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:08:51,551 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:08:51,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51 WrapperNode [2021-10-13 19:08:51,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:08:51,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:08:51,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:08:51,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:08:51,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:08:51,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:08:51,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:08:51,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:08:51,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:08:51,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:08:51,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:08:51,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:08:51,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (1/1) ... [2021-10-13 19:08:51,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:08:51,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:08:51,712 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 19:08:51,736 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 19:08:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 19:08:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:08:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:08:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:08:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:08:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:08:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 19:08:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:08:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:08:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 19:08:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:08:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:08:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:08:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:08:51,783 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 19:08:52,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:08:52,482 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-13 19:08:52,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:52 BoogieIcfgContainer [2021-10-13 19:08:52,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:08:52,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:08:52,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:08:52,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:08:52,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:51" (1/3) ... [2021-10-13 19:08:52,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128100b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:52, skipping insertion in model container [2021-10-13 19:08:52,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:51" (2/3) ... [2021-10-13 19:08:52,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128100b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:52, skipping insertion in model container [2021-10-13 19:08:52,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:52" (3/3) ... [2021-10-13 19:08:52,494 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2021-10-13 19:08:52,500 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:08:52,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:08:52,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-13 19:08:52,501 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:08:52,546 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,551 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,552 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,554 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,554 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,574 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,574 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,574 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,577 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,577 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,582 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,587 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,587 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,587 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,588 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,588 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,588 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,588 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,589 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:08:52,595 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 19:08:52,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:08:52,660 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 19:08:52,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-13 19:08:52,693 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:08:52,706 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 301 transitions, 618 flow [2021-10-13 19:08:52,709 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 301 transitions, 618 flow [2021-10-13 19:08:52,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 301 transitions, 618 flow [2021-10-13 19:08:52,835 INFO L129 PetriNetUnfolder]: 27/299 cut-off events. [2021-10-13 19:08:52,836 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 19:08:52,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 299 events. 27/299 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 445 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2021-10-13 19:08:52,856 INFO L116 LiptonReduction]: Number of co-enabled transitions 1916 [2021-10-13 19:09:28,849 INFO L131 LiptonReduction]: Checked pairs total: 3591 [2021-10-13 19:09:28,849 INFO L133 LiptonReduction]: Total number of compositions: 364 [2021-10-13 19:09:28,862 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 56 transitions, 128 flow [2021-10-13 19:09:28,889 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 19:09:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 19:09:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 19:09:28,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:28,899 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 19:09:28,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1167, now seen corresponding path program 1 times [2021-10-13 19:09:28,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:28,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277580918] [2021-10-13 19:09:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:28,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:29,028 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 19:09:29,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:29,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277580918] [2021-10-13 19:09:29,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277580918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:29,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:29,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-13 19:09:29,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529518718] [2021-10-13 19:09:29,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 19:09:29,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 19:09:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:09:29,057 INFO L87 Difference]: Start difference. First operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states 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 19:09:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:29,084 INFO L93 Difference]: Finished difference Result 225 states and 535 transitions. [2021-10-13 19:09:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 19:09:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-13 19:09:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:29,118 INFO L225 Difference]: With dead ends: 225 [2021-10-13 19:09:29,119 INFO L226 Difference]: Without dead ends: 225 [2021-10-13 19:09:29,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 19:09:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-13 19:09:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-10-13 19:09:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 189 states have (on average 2.8306878306878307) internal successors, (535), 224 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 19:09:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 535 transitions. [2021-10-13 19:09:29,202 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 535 transitions. Word has length 1 [2021-10-13 19:09:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 535 transitions. [2021-10-13 19:09:29,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states 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 19:09:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 535 transitions. [2021-10-13 19:09:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:09:29,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:29,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:09:29,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:09:29,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:29,205 INFO L82 PathProgramCache]: Analyzing trace with hash 37219, now seen corresponding path program 1 times [2021-10-13 19:09:29,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:29,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671152281] [2021-10-13 19:09:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:29,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:29,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:29,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074979017] [2021-10-13 19:09:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:29,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:29,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:29,242 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 19:09:29,244 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 19:09:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:29,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:29,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:29,350 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 19:09:29,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:29,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671152281] [2021-10-13 19:09:29,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:29,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074979017] [2021-10-13 19:09:29,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074979017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:29,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:29,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:09:29,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830207109] [2021-10-13 19:09:29,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:29,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:29,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:29,356 INFO L87 Difference]: Start difference. First operand 225 states and 535 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states 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 19:09:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:29,469 INFO L93 Difference]: Finished difference Result 443 states and 1066 transitions. [2021-10-13 19:09:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:29,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 19:09:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:29,479 INFO L225 Difference]: With dead ends: 443 [2021-10-13 19:09:29,479 INFO L226 Difference]: Without dead ends: 443 [2021-10-13 19:09:29,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-13 19:09:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 228. [2021-10-13 19:09:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 192 states have (on average 2.84375) internal successors, (546), 227 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 19:09:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 546 transitions. [2021-10-13 19:09:29,526 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 546 transitions. Word has length 2 [2021-10-13 19:09:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:29,526 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 546 transitions. [2021-10-13 19:09:29,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states 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 19:09:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 546 transitions. [2021-10-13 19:09:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:09:29,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:29,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:09:29,553 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 19:09:29,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:29,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:29,736 INFO L82 PathProgramCache]: Analyzing trace with hash 37276, now seen corresponding path program 1 times [2021-10-13 19:09:29,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:29,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020978852] [2021-10-13 19:09:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:29,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:29,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:29,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903992563] [2021-10-13 19:09:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:29,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:29,758 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 19:09:29,776 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 19:09:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:29,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:29,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:29,841 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 19:09:29,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:29,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020978852] [2021-10-13 19:09:29,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:29,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903992563] [2021-10-13 19:09:29,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903992563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:29,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:09:29,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550272409] [2021-10-13 19:09:29,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:29,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:29,849 INFO L87 Difference]: Start difference. First operand 228 states and 546 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states 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 19:09:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:29,897 INFO L93 Difference]: Finished difference Result 225 states and 540 transitions. [2021-10-13 19:09:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 19:09:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:29,901 INFO L225 Difference]: With dead ends: 225 [2021-10-13 19:09:29,901 INFO L226 Difference]: Without dead ends: 225 [2021-10-13 19:09:29,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-13 19:09:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-10-13 19:09:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 2.8125) internal successors, (540), 224 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 19:09:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 540 transitions. [2021-10-13 19:09:29,933 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 540 transitions. Word has length 2 [2021-10-13 19:09:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:29,933 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 540 transitions. [2021-10-13 19:09:29,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states 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 19:09:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 540 transitions. [2021-10-13 19:09:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:09:29,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:29,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:09:29,966 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 19:09:30,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:30,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1156598, now seen corresponding path program 1 times [2021-10-13 19:09:30,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:30,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491809237] [2021-10-13 19:09:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:30,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:30,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:30,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915003211] [2021-10-13 19:09:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:30,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:30,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:30,159 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 19:09:30,171 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 19:09:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:30,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:30,274 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 19:09:30,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:30,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491809237] [2021-10-13 19:09:30,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:30,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915003211] [2021-10-13 19:09:30,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915003211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:30,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:30,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:30,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113924271] [2021-10-13 19:09:30,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:30,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:30,279 INFO L87 Difference]: Start difference. First operand 225 states and 540 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:30,383 INFO L93 Difference]: Finished difference Result 658 states and 1588 transitions. [2021-10-13 19:09:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:30,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:09:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:30,389 INFO L225 Difference]: With dead ends: 658 [2021-10-13 19:09:30,390 INFO L226 Difference]: Without dead ends: 658 [2021-10-13 19:09:30,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-13 19:09:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 228. [2021-10-13 19:09:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 195 states have (on average 2.81025641025641) internal successors, (548), 227 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 19:09:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 548 transitions. [2021-10-13 19:09:30,405 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 548 transitions. Word has length 3 [2021-10-13 19:09:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:30,405 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 548 transitions. [2021-10-13 19:09:30,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 548 transitions. [2021-10-13 19:09:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:09:30,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:30,406 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 19:09:30,444 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 19:09:30,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:30,620 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:30,620 INFO L82 PathProgramCache]: Analyzing trace with hash 35857347, now seen corresponding path program 2 times [2021-10-13 19:09:30,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:30,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067926725] [2021-10-13 19:09:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:30,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:30,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:30,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901137618] [2021-10-13 19:09:30,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:30,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:30,640 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 19:09:30,648 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 19:09:30,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:30,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:30,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:09:30,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:09:30,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:30,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067926725] [2021-10-13 19:09:30,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:30,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901137618] [2021-10-13 19:09:30,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901137618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:30,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:30,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:09:30,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457608192] [2021-10-13 19:09:30,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:30,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:30,845 INFO L87 Difference]: Start difference. First operand 228 states and 548 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:30,937 INFO L93 Difference]: Finished difference Result 227 states and 547 transitions. [2021-10-13 19:09:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:09:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:30,941 INFO L225 Difference]: With dead ends: 227 [2021-10-13 19:09:30,941 INFO L226 Difference]: Without dead ends: 227 [2021-10-13 19:09:30,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-13 19:09:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2021-10-13 19:09:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 193 states have (on average 2.8134715025906734) internal successors, (543), 224 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 19:09:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 543 transitions. [2021-10-13 19:09:30,950 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 543 transitions. Word has length 4 [2021-10-13 19:09:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:30,951 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 543 transitions. [2021-10-13 19:09:30,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 543 transitions. [2021-10-13 19:09:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:09:30,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:30,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:09:30,992 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 19:09:31,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,166 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1113479597, now seen corresponding path program 1 times [2021-10-13 19:09:31,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:31,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678166788] [2021-10-13 19:09:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:31,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:31,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464390476] [2021-10-13 19:09:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:31,176 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 19:09:31,194 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 19:09:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:31,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:31,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:31,280 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 19:09:31,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:31,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678166788] [2021-10-13 19:09:31,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:31,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464390476] [2021-10-13 19:09:31,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464390476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:31,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:31,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:31,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421171288] [2021-10-13 19:09:31,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:31,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:31,284 INFO L87 Difference]: Start difference. First operand 225 states and 543 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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 19:09:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:31,304 INFO L93 Difference]: Finished difference Result 224 states and 540 transitions. [2021-10-13 19:09:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 19:09:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:31,307 INFO L225 Difference]: With dead ends: 224 [2021-10-13 19:09:31,307 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 19:09:31,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 19:09:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-10-13 19:09:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 193 states have (on average 2.7979274611398965) internal successors, (540), 223 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 19:09:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 540 transitions. [2021-10-13 19:09:31,316 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 540 transitions. Word has length 5 [2021-10-13 19:09:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:31,317 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 540 transitions. [2021-10-13 19:09:31,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 19:09:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 540 transitions. [2021-10-13 19:09:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:09:31,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:31,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:09:31,354 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 19:09:31,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:31,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:31,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1113479526, now seen corresponding path program 1 times [2021-10-13 19:09:31,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:31,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810654687] [2021-10-13 19:09:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:31,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:31,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518117467] [2021-10-13 19:09:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:31,545 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 19:09:31,551 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 19:09:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:31,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:31,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:31,636 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 19:09:31,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:31,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810654687] [2021-10-13 19:09:31,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:31,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518117467] [2021-10-13 19:09:31,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518117467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:31,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:31,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:31,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533497869] [2021-10-13 19:09:31,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:31,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:31,639 INFO L87 Difference]: Start difference. First operand 224 states and 540 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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 19:09:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:31,671 INFO L93 Difference]: Finished difference Result 441 states and 1067 transitions. [2021-10-13 19:09:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:31,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 19:09:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:31,676 INFO L225 Difference]: With dead ends: 441 [2021-10-13 19:09:31,676 INFO L226 Difference]: Without dead ends: 441 [2021-10-13 19:09:31,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-10-13 19:09:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 228. [2021-10-13 19:09:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 197 states have (on average 2.786802030456853) internal successors, (549), 227 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 19:09:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 549 transitions. [2021-10-13 19:09:31,687 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 549 transitions. Word has length 5 [2021-10-13 19:09:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:31,688 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 549 transitions. [2021-10-13 19:09:31,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 19:09:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 549 transitions. [2021-10-13 19:09:31,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:09:31,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:31,688 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-13 19:09:31,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-13 19:09:31,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,903 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:31,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1113440519, now seen corresponding path program 1 times [2021-10-13 19:09:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:31,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275284842] [2021-10-13 19:09:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:31,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:31,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926583624] [2021-10-13 19:09:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:31,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:31,912 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 19:09:31,916 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 19:09:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:31,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:09:31,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:09:32,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:32,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275284842] [2021-10-13 19:09:32,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:32,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926583624] [2021-10-13 19:09:32,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926583624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:32,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:32,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:09:32,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425742836] [2021-10-13 19:09:32,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:32,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:32,061 INFO L87 Difference]: Start difference. First operand 228 states and 549 transitions. Second operand has 4 states, 4 states have (on average 1.25) 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 19:09:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:32,171 INFO L93 Difference]: Finished difference Result 658 states and 1596 transitions. [2021-10-13 19:09:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) 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 19:09:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:32,177 INFO L225 Difference]: With dead ends: 658 [2021-10-13 19:09:32,177 INFO L226 Difference]: Without dead ends: 658 [2021-10-13 19:09:32,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-13 19:09:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 230. [2021-10-13 19:09:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 229 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 552 transitions. [2021-10-13 19:09:32,191 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 552 transitions. Word has length 5 [2021-10-13 19:09:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:32,191 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 552 transitions. [2021-10-13 19:09:32,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) 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 19:09:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 552 transitions. [2021-10-13 19:09:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:09:32,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:32,192 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-13 19:09:32,232 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 19:09:32,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:32,406 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash 101121940, now seen corresponding path program 1 times [2021-10-13 19:09:32,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:32,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851928881] [2021-10-13 19:09:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:32,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:32,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:32,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25015590] [2021-10-13 19:09:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:32,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:32,417 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 19:09:32,418 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 19:09:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:32,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:09:32,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:09:32,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:32,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851928881] [2021-10-13 19:09:32,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:32,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25015590] [2021-10-13 19:09:32,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25015590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:32,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:32,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 19:09:32,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122636126] [2021-10-13 19:09:32,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:09:32,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:09:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:09:32,574 INFO L87 Difference]: Start difference. First operand 230 states and 552 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 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 19:09:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:32,717 INFO L93 Difference]: Finished difference Result 1085 states and 2637 transitions. [2021-10-13 19:09:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:09:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 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 19:09:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:32,727 INFO L225 Difference]: With dead ends: 1085 [2021-10-13 19:09:32,727 INFO L226 Difference]: Without dead ends: 1085 [2021-10-13 19:09:32,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:09:32,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-10-13 19:09:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 232. [2021-10-13 19:09:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 201 states have (on average 2.7661691542288556) internal successors, (556), 231 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 19:09:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 556 transitions. [2021-10-13 19:09:32,745 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 556 transitions. Word has length 6 [2021-10-13 19:09:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:32,745 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 556 transitions. [2021-10-13 19:09:32,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 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 19:09:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 556 transitions. [2021-10-13 19:09:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:09:32,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:32,746 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-13 19:09:32,793 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 19:09:32,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:32,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:32,961 INFO L82 PathProgramCache]: Analyzing trace with hash 607071148, now seen corresponding path program 1 times [2021-10-13 19:09:32,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:32,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231438759] [2021-10-13 19:09:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:32,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:32,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:32,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92539856] [2021-10-13 19:09:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:32,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:32,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:32,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 19:09:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:33,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:33,079 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 19:09:33,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:33,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231438759] [2021-10-13 19:09:33,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:33,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92539856] [2021-10-13 19:09:33,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92539856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:33,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:33,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-13 19:09:33,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671956563] [2021-10-13 19:09:33,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:33,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:33,088 INFO L87 Difference]: Start difference. First operand 232 states and 556 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:33,140 INFO L93 Difference]: Finished difference Result 662 states and 1601 transitions. [2021-10-13 19:09:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:09:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:33,146 INFO L225 Difference]: With dead ends: 662 [2021-10-13 19:09:33,147 INFO L226 Difference]: Without dead ends: 662 [2021-10-13 19:09:33,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-13 19:09:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 236. [2021-10-13 19:09:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 205 states have (on average 2.7560975609756095) internal successors, (565), 235 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 19:09:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 565 transitions. [2021-10-13 19:09:33,160 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 565 transitions. Word has length 7 [2021-10-13 19:09:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:33,160 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 565 transitions. [2021-10-13 19:09:33,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 565 transitions. [2021-10-13 19:09:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:09:33,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:33,161 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-13 19:09:33,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:33,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:33,375 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:33,375 INFO L82 PathProgramCache]: Analyzing trace with hash 607082276, now seen corresponding path program 1 times [2021-10-13 19:09:33,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:33,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864418319] [2021-10-13 19:09:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:33,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:33,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:33,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480547826] [2021-10-13 19:09:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:33,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:33,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:33,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:33,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 19:09:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:33,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:09:33,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:09:33,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:33,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864418319] [2021-10-13 19:09:33,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:33,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480547826] [2021-10-13 19:09:33,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480547826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:33,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:33,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 19:09:33,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546437739] [2021-10-13 19:09:33,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:09:33,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:33,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:09:33,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:33,502 INFO L87 Difference]: Start difference. First operand 236 states and 565 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:33,594 INFO L93 Difference]: Finished difference Result 890 states and 2149 transitions. [2021-10-13 19:09:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:09:33,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:09:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:33,602 INFO L225 Difference]: With dead ends: 890 [2021-10-13 19:09:33,602 INFO L226 Difference]: Without dead ends: 890 [2021-10-13 19:09:33,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-13 19:09:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 240. [2021-10-13 19:09:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 209 states have (on average 2.7464114832535884) internal successors, (574), 239 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 19:09:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 574 transitions. [2021-10-13 19:09:33,617 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 574 transitions. Word has length 7 [2021-10-13 19:09:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:33,618 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 574 transitions. [2021-10-13 19:09:33,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 574 transitions. [2021-10-13 19:09:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:09:33,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:33,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:33,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:33,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 19:09:33,833 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1493226769, now seen corresponding path program 1 times [2021-10-13 19:09:33,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:33,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087154216] [2021-10-13 19:09:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:33,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:33,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:33,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135911256] [2021-10-13 19:09:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:33,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:33,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:33,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 19:09:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:33,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:09:33,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:33,961 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 19:09:33,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:33,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087154216] [2021-10-13 19:09:33,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:33,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135911256] [2021-10-13 19:09:33,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135911256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:33,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:33,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:09:33,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138288796] [2021-10-13 19:09:33,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:09:33,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:09:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:33,964 INFO L87 Difference]: Start difference. First operand 240 states and 574 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:34,063 INFO L93 Difference]: Finished difference Result 505 states and 1136 transitions. [2021-10-13 19:09:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:09:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 19:09:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:34,068 INFO L225 Difference]: With dead ends: 505 [2021-10-13 19:09:34,068 INFO L226 Difference]: Without dead ends: 505 [2021-10-13 19:09:34,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-10-13 19:09:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 317. [2021-10-13 19:09:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 286 states have (on average 2.674825174825175) internal successors, (765), 316 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 19:09:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 765 transitions. [2021-10-13 19:09:34,081 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 765 transitions. Word has length 8 [2021-10-13 19:09:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:34,082 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 765 transitions. [2021-10-13 19:09:34,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 765 transitions. [2021-10-13 19:09:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:09:34,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:34,083 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-13 19:09:34,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:34,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:34,297 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:34,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1639684049, now seen corresponding path program 2 times [2021-10-13 19:09:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:34,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036762690] [2021-10-13 19:09:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:34,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:34,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:34,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795663460] [2021-10-13 19:09:34,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:34,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:34,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:34,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 19:09:34,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:34,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:34,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:09:34,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:09:34,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:34,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036762690] [2021-10-13 19:09:34,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:34,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795663460] [2021-10-13 19:09:34,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795663460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:34,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:34,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:34,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841118713] [2021-10-13 19:09:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:34,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:34,415 INFO L87 Difference]: Start difference. First operand 317 states and 765 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 19:09:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:34,656 INFO L93 Difference]: Finished difference Result 589 states and 1430 transitions. [2021-10-13 19:09:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:34,657 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 8 [2021-10-13 19:09:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:34,661 INFO L225 Difference]: With dead ends: 589 [2021-10-13 19:09:34,661 INFO L226 Difference]: Without dead ends: 589 [2021-10-13 19:09:34,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-10-13 19:09:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 298. [2021-10-13 19:09:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 268 states have (on average 2.675373134328358) internal successors, (717), 297 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 19:09:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 717 transitions. [2021-10-13 19:09:34,675 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 717 transitions. Word has length 8 [2021-10-13 19:09:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:34,676 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 717 transitions. [2021-10-13 19:09:34,676 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 19:09:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 717 transitions. [2021-10-13 19:09:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:09:34,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:34,677 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2021-10-13 19:09:34,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:34,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 19:09:34,891 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash 959237379, now seen corresponding path program 2 times [2021-10-13 19:09:34,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:34,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622895167] [2021-10-13 19:09:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:34,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:34,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:34,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588579118] [2021-10-13 19:09:34,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:34,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:34,900 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:34,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 19:09:34,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:34,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:09:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:09:35,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:35,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622895167] [2021-10-13 19:09:35,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:35,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588579118] [2021-10-13 19:09:35,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588579118] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:35,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:35,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:35,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086708886] [2021-10-13 19:09:35,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:35,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:35,347 INFO L87 Difference]: Start difference. First operand 298 states and 717 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 19:09:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:35,497 INFO L93 Difference]: Finished difference Result 570 states and 1387 transitions. [2021-10-13 19:09:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:35,497 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 8 [2021-10-13 19:09:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:35,502 INFO L225 Difference]: With dead ends: 570 [2021-10-13 19:09:35,502 INFO L226 Difference]: Without dead ends: 570 [2021-10-13 19:09:35,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-13 19:09:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 295. [2021-10-13 19:09:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 266 states have (on average 2.6766917293233083) internal successors, (712), 294 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 19:09:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 712 transitions. [2021-10-13 19:09:35,515 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 712 transitions. Word has length 8 [2021-10-13 19:09:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:35,516 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 712 transitions. [2021-10-13 19:09:35,516 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 19:09:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 712 transitions. [2021-10-13 19:09:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:09:35,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:35,517 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2021-10-13 19:09:35,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:35,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 19:09:35,730 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:35,731 INFO L82 PathProgramCache]: Analyzing trace with hash -720075662, now seen corresponding path program 2 times [2021-10-13 19:09:35,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:35,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893385446] [2021-10-13 19:09:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:35,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:35,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:35,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759725228] [2021-10-13 19:09:35,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:35,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:35,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:35,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 19:09:35,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:35,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:35,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:35,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:09:35,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:35,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893385446] [2021-10-13 19:09:35,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:35,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759725228] [2021-10-13 19:09:35,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759725228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:35,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:35,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:35,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500720142] [2021-10-13 19:09:35,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:35,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:35,859 INFO L87 Difference]: Start difference. First operand 295 states and 712 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 19:09:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:35,904 INFO L93 Difference]: Finished difference Result 567 states and 1381 transitions. [2021-10-13 19:09:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:35,905 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 9 [2021-10-13 19:09:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:35,909 INFO L225 Difference]: With dead ends: 567 [2021-10-13 19:09:35,909 INFO L226 Difference]: Without dead ends: 567 [2021-10-13 19:09:35,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-13 19:09:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 286. [2021-10-13 19:09:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 258 states have (on average 2.689922480620155) internal successors, (694), 285 states have internal predecessors, (694), 0 states have call successors, (0), 0 states 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 19:09:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 694 transitions. [2021-10-13 19:09:35,923 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 694 transitions. Word has length 9 [2021-10-13 19:09:35,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:35,923 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 694 transitions. [2021-10-13 19:09:35,923 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 19:09:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 694 transitions. [2021-10-13 19:09:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:09:35,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:35,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:35,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:36,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 19:09:36,138 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash 738286327, now seen corresponding path program 1 times [2021-10-13 19:09:36,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:36,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591611932] [2021-10-13 19:09:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:36,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:36,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148956952] [2021-10-13 19:09:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:36,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:36,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 19:09:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:36,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:36,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:36,269 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 19:09:36,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:36,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591611932] [2021-10-13 19:09:36,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:36,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148956952] [2021-10-13 19:09:36,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148956952] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:36,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:36,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 19:09:36,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926351887] [2021-10-13 19:09:36,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:09:36,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:09:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:36,272 INFO L87 Difference]: Start difference. First operand 286 states and 694 transitions. Second operand has 5 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 19:09:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:36,326 INFO L93 Difference]: Finished difference Result 363 states and 851 transitions. [2021-10-13 19:09:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:09:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 19:09:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:36,329 INFO L225 Difference]: With dead ends: 363 [2021-10-13 19:09:36,329 INFO L226 Difference]: Without dead ends: 331 [2021-10-13 19:09:36,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-10-13 19:09:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 325. [2021-10-13 19:09:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 297 states have (on average 2.6296296296296298) internal successors, (781), 324 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 19:09:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 781 transitions. [2021-10-13 19:09:36,341 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 781 transitions. Word has length 10 [2021-10-13 19:09:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:36,341 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 781 transitions. [2021-10-13 19:09:36,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 19:09:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 781 transitions. [2021-10-13 19:09:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:09:36,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:36,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:36,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:36,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 19:09:36,555 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash -432298494, now seen corresponding path program 1 times [2021-10-13 19:09:36,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:36,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411637622] [2021-10-13 19:09:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:36,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:36,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049864040] [2021-10-13 19:09:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:36,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:36,564 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:36,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 19:09:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:36,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:36,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:09:36,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:36,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411637622] [2021-10-13 19:09:36,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:36,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049864040] [2021-10-13 19:09:36,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049864040] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:36,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:36,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:36,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783396872] [2021-10-13 19:09:36,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:36,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:36,676 INFO L87 Difference]: Start difference. First operand 325 states and 781 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:36,699 INFO L93 Difference]: Finished difference Result 462 states and 1142 transitions. [2021-10-13 19:09:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:36,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:36,703 INFO L225 Difference]: With dead ends: 462 [2021-10-13 19:09:36,703 INFO L226 Difference]: Without dead ends: 462 [2021-10-13 19:09:36,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:36,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-13 19:09:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 401. [2021-10-13 19:09:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 373 states have (on average 2.774798927613941) internal successors, (1035), 400 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 19:09:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1035 transitions. [2021-10-13 19:09:36,718 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1035 transitions. Word has length 10 [2021-10-13 19:09:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:36,719 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1035 transitions. [2021-10-13 19:09:36,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1035 transitions. [2021-10-13 19:09:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:09:36,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:36,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:36,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:36,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 19:09:36,935 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash -432298493, now seen corresponding path program 1 times [2021-10-13 19:09:36,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:36,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868787023] [2021-10-13 19:09:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:36,943 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:36,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157619434] [2021-10-13 19:09:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:36,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:36,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:36,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:36,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 19:09:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:37,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:37,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:09:37,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:37,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868787023] [2021-10-13 19:09:37,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:37,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157619434] [2021-10-13 19:09:37,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157619434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:37,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:37,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:37,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280841243] [2021-10-13 19:09:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:37,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:37,060 INFO L87 Difference]: Start difference. First operand 401 states and 1035 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:37,071 INFO L93 Difference]: Finished difference Result 365 states and 905 transitions. [2021-10-13 19:09:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:37,074 INFO L225 Difference]: With dead ends: 365 [2021-10-13 19:09:37,075 INFO L226 Difference]: Without dead ends: 365 [2021-10-13 19:09:37,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-10-13 19:09:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-10-13 19:09:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 2.615606936416185) internal successors, (905), 364 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 19:09:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 905 transitions. [2021-10-13 19:09:37,087 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 905 transitions. Word has length 10 [2021-10-13 19:09:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:37,088 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 905 transitions. [2021-10-13 19:09:37,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 19:09:37,088 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 905 transitions. [2021-10-13 19:09:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:09:37,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:37,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:37,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:09:37,303 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1118370703, now seen corresponding path program 1 times [2021-10-13 19:09:37,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:37,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620756992] [2021-10-13 19:09:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:37,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:37,311 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:37,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102576693] [2021-10-13 19:09:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:37,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:37,313 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:37,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 19:09:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:37,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:09:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:37,485 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 19:09:37,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:37,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620756992] [2021-10-13 19:09:37,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:37,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102576693] [2021-10-13 19:09:37,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102576693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:37,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:37,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:09:37,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823330483] [2021-10-13 19:09:37,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:09:37,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:09:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:37,488 INFO L87 Difference]: Start difference. First operand 365 states and 905 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:37,736 INFO L93 Difference]: Finished difference Result 739 states and 1825 transitions. [2021-10-13 19:09:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:09:37,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:09:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:37,742 INFO L225 Difference]: With dead ends: 739 [2021-10-13 19:09:37,742 INFO L226 Difference]: Without dead ends: 703 [2021-10-13 19:09:37,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-10-13 19:09:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 451. [2021-10-13 19:09:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 432 states have (on average 2.689814814814815) internal successors, (1162), 450 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 19:09:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1162 transitions. [2021-10-13 19:09:37,760 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1162 transitions. Word has length 12 [2021-10-13 19:09:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:37,761 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1162 transitions. [2021-10-13 19:09:37,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1162 transitions. [2021-10-13 19:09:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:09:37,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:37,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:37,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 19:09:37,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:37,978 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:37,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1118370767, now seen corresponding path program 1 times [2021-10-13 19:09:37,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:37,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437121166] [2021-10-13 19:09:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:37,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:37,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:37,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246247041] [2021-10-13 19:09:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:37,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:37,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:37,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:37,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 19:09:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:38,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:09:38,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:38,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437121166] [2021-10-13 19:09:38,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:38,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246247041] [2021-10-13 19:09:38,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246247041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:38,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:38,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:38,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491811450] [2021-10-13 19:09:38,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:38,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:38,115 INFO L87 Difference]: Start difference. First operand 451 states and 1162 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:38,136 INFO L93 Difference]: Finished difference Result 431 states and 1091 transitions. [2021-10-13 19:09:38,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:38,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:09:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:38,140 INFO L225 Difference]: With dead ends: 431 [2021-10-13 19:09:38,140 INFO L226 Difference]: Without dead ends: 431 [2021-10-13 19:09:38,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-13 19:09:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-10-13 19:09:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 414 states have (on average 2.635265700483092) internal successors, (1091), 430 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states 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 19:09:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1091 transitions. [2021-10-13 19:09:38,155 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1091 transitions. Word has length 12 [2021-10-13 19:09:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1091 transitions. [2021-10-13 19:09:38,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1091 transitions. [2021-10-13 19:09:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:09:38,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:38,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:38,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-13 19:09:38,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:38,371 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1118370765, now seen corresponding path program 1 times [2021-10-13 19:09:38,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:38,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287592498] [2021-10-13 19:09:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:38,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:38,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:38,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134766303] [2021-10-13 19:09:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:38,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:38,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:38,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 19:09:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:38,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:38,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:09:38,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:38,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287592498] [2021-10-13 19:09:38,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:38,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134766303] [2021-10-13 19:09:38,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134766303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:38,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:38,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:38,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381478914] [2021-10-13 19:09:38,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:38,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:38,518 INFO L87 Difference]: Start difference. First operand 431 states and 1091 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:38,550 INFO L93 Difference]: Finished difference Result 704 states and 1806 transitions. [2021-10-13 19:09:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:09:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:38,556 INFO L225 Difference]: With dead ends: 704 [2021-10-13 19:09:38,556 INFO L226 Difference]: Without dead ends: 704 [2021-10-13 19:09:38,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-13 19:09:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 551. [2021-10-13 19:09:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 534 states have (on average 2.938202247191011) internal successors, (1569), 550 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states 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 19:09:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1569 transitions. [2021-10-13 19:09:38,577 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1569 transitions. Word has length 12 [2021-10-13 19:09:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:38,577 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 1569 transitions. [2021-10-13 19:09:38,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1569 transitions. [2021-10-13 19:09:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:09:38,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:38,578 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:38,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:38,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:38,792 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1173039581, now seen corresponding path program 1 times [2021-10-13 19:09:38,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:38,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514665357] [2021-10-13 19:09:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:38,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:38,800 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:38,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160804878] [2021-10-13 19:09:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:38,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:38,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:38,802 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:38,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 19:09:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:38,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:09:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:09:38,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:38,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514665357] [2021-10-13 19:09:38,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:38,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160804878] [2021-10-13 19:09:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160804878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:39,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:39,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 19:09:39,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878061591] [2021-10-13 19:09:39,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:09:39,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:09:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:39,001 INFO L87 Difference]: Start difference. First operand 551 states and 1569 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:39,156 INFO L93 Difference]: Finished difference Result 983 states and 2674 transitions. [2021-10-13 19:09:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:09:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:09:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:39,164 INFO L225 Difference]: With dead ends: 983 [2021-10-13 19:09:39,164 INFO L226 Difference]: Without dead ends: 942 [2021-10-13 19:09:39,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:09:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-13 19:09:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 704. [2021-10-13 19:09:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 687 states have (on average 2.978165938864629) internal successors, (2046), 703 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states 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 19:09:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2046 transitions. [2021-10-13 19:09:39,191 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2046 transitions. Word has length 12 [2021-10-13 19:09:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:39,191 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 2046 transitions. [2021-10-13 19:09:39,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2046 transitions. [2021-10-13 19:09:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:09:39,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:39,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:39,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:39,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 19:09:39,408 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1957242852, now seen corresponding path program 1 times [2021-10-13 19:09:39,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:39,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772248474] [2021-10-13 19:09:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:39,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:39,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:39,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023095211] [2021-10-13 19:09:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:39,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:39,421 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:39,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 19:09:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:39,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:39,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:09:39,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:39,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772248474] [2021-10-13 19:09:39,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:39,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023095211] [2021-10-13 19:09:39,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023095211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:39,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:39,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:39,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506615327] [2021-10-13 19:09:39,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:39,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:39,568 INFO L87 Difference]: Start difference. First operand 704 states and 2046 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:39,624 INFO L93 Difference]: Finished difference Result 847 states and 2224 transitions. [2021-10-13 19:09:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:09:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:39,631 INFO L225 Difference]: With dead ends: 847 [2021-10-13 19:09:39,632 INFO L226 Difference]: Without dead ends: 847 [2021-10-13 19:09:39,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-10-13 19:09:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 704. [2021-10-13 19:09:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 687 states have (on average 2.9024745269286756) internal successors, (1994), 703 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states 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 19:09:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1994 transitions. [2021-10-13 19:09:39,658 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1994 transitions. Word has length 13 [2021-10-13 19:09:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:39,658 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1994 transitions. [2021-10-13 19:09:39,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1994 transitions. [2021-10-13 19:09:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:09:39,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:39,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:39,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:39,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-13 19:09:39,872 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1957242904, now seen corresponding path program 1 times [2021-10-13 19:09:39,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:39,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143102486] [2021-10-13 19:09:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:39,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:39,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:39,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252166550] [2021-10-13 19:09:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:39,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:39,881 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:39,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 19:09:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:39,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:39,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:09:40,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:40,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143102486] [2021-10-13 19:09:40,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:40,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252166550] [2021-10-13 19:09:40,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252166550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:40,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:40,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:40,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447826759] [2021-10-13 19:09:40,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:40,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:40,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:40,018 INFO L87 Difference]: Start difference. First operand 704 states and 1994 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:40,068 INFO L93 Difference]: Finished difference Result 691 states and 1868 transitions. [2021-10-13 19:09:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:40,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:09:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:40,074 INFO L225 Difference]: With dead ends: 691 [2021-10-13 19:09:40,074 INFO L226 Difference]: Without dead ends: 691 [2021-10-13 19:09:40,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-10-13 19:09:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 652. [2021-10-13 19:09:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 639 states have (on average 2.8262910798122065) internal successors, (1806), 651 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1806 transitions. [2021-10-13 19:09:40,097 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1806 transitions. Word has length 13 [2021-10-13 19:09:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:40,097 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1806 transitions. [2021-10-13 19:09:40,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1806 transitions. [2021-10-13 19:09:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:09:40,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:40,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:40,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:40,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:40,314 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:40,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1957242906, now seen corresponding path program 1 times [2021-10-13 19:09:40,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:40,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978788196] [2021-10-13 19:09:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:40,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:40,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:40,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804520368] [2021-10-13 19:09:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:40,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:40,326 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:40,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 19:09:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:09:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:09:40,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:40,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978788196] [2021-10-13 19:09:40,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:40,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804520368] [2021-10-13 19:09:40,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804520368] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:40,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:40,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:40,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162298750] [2021-10-13 19:09:40,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:09:40,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:09:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:40,483 INFO L87 Difference]: Start difference. First operand 652 states and 1806 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:40,513 INFO L93 Difference]: Finished difference Result 951 states and 2626 transitions. [2021-10-13 19:09:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:09:40,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:09:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:40,527 INFO L225 Difference]: With dead ends: 951 [2021-10-13 19:09:40,527 INFO L226 Difference]: Without dead ends: 951 [2021-10-13 19:09:40,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:09:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-10-13 19:09:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 808. [2021-10-13 19:09:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 795 states have (on average 2.9484276729559746) internal successors, (2344), 807 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states 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 19:09:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2344 transitions. [2021-10-13 19:09:40,560 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2344 transitions. Word has length 13 [2021-10-13 19:09:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:40,560 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2344 transitions. [2021-10-13 19:09:40,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2344 transitions. [2021-10-13 19:09:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:09:40,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:40,562 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:40,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:40,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 19:09:40,776 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1012383234, now seen corresponding path program 1 times [2021-10-13 19:09:40,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:40,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271426558] [2021-10-13 19:09:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:40,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:40,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:40,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374682318] [2021-10-13 19:09:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:40,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:40,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:40,785 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:40,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 19:09:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:40,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:09:40,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:09:40,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:40,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271426558] [2021-10-13 19:09:40,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:40,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374682318] [2021-10-13 19:09:40,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374682318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:40,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 19:09:40,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713632089] [2021-10-13 19:09:40,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:09:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:09:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:40,973 INFO L87 Difference]: Start difference. First operand 808 states and 2344 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:41,087 INFO L93 Difference]: Finished difference Result 1359 states and 3730 transitions. [2021-10-13 19:09:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:09:41,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:09:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:41,097 INFO L225 Difference]: With dead ends: 1359 [2021-10-13 19:09:41,097 INFO L226 Difference]: Without dead ends: 1245 [2021-10-13 19:09:41,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:09:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-10-13 19:09:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1104. [2021-10-13 19:09:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1091 states have (on average 2.914757103574702) internal successors, (3180), 1103 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 19:09:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 3180 transitions. [2021-10-13 19:09:41,132 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 3180 transitions. Word has length 14 [2021-10-13 19:09:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:41,133 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 3180 transitions. [2021-10-13 19:09:41,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 3180 transitions. [2021-10-13 19:09:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:09:41,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:41,134 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:41,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:41,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:41,349 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash 378988556, now seen corresponding path program 2 times [2021-10-13 19:09:41,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:41,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804415106] [2021-10-13 19:09:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:41,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:41,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:41,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509970875] [2021-10-13 19:09:41,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:41,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:41,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:41,358 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:41,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 19:09:41,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:41,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:41,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:09:41,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:43,315 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:09:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2021-10-13 19:09:43,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:43,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804415106] [2021-10-13 19:09:43,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:43,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509970875] [2021-10-13 19:09:43,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509970875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:43,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:43,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:43,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539478754] [2021-10-13 19:09:43,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:43,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2021-10-13 19:09:43,318 INFO L87 Difference]: Start difference. First operand 1104 states and 3180 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:45,336 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:09:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:46,968 INFO L93 Difference]: Finished difference Result 1638 states and 4679 transitions. [2021-10-13 19:09:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:46,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:09:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:46,983 INFO L225 Difference]: With dead ends: 1638 [2021-10-13 19:09:46,984 INFO L226 Difference]: Without dead ends: 1633 [2021-10-13 19:09:46,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3551.8ms TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=2, NotChecked=6, Total=20 [2021-10-13 19:09:46,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-10-13 19:09:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1337. [2021-10-13 19:09:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1324 states have (on average 2.974320241691843) internal successors, (3938), 1336 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states 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 19:09:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3938 transitions. [2021-10-13 19:09:47,029 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3938 transitions. Word has length 14 [2021-10-13 19:09:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:47,029 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3938 transitions. [2021-10-13 19:09:47,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3938 transitions. [2021-10-13 19:09:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:09:47,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:47,030 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:47,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-13 19:09:47,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 19:09:47,243 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1138493613, now seen corresponding path program 1 times [2021-10-13 19:09:47,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:47,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511312259] [2021-10-13 19:09:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:47,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:47,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:47,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578889375] [2021-10-13 19:09:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:47,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:47,254 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:47,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 19:09:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:09:47,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:47,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511312259] [2021-10-13 19:09:47,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:47,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578889375] [2021-10-13 19:09:47,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578889375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:47,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:47,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-13 19:09:47,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395307845] [2021-10-13 19:09:47,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:47,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:47,418 INFO L87 Difference]: Start difference. First operand 1337 states and 3938 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:47,451 INFO L93 Difference]: Finished difference Result 2061 states and 5903 transitions. [2021-10-13 19:09:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 19:09:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:47,462 INFO L225 Difference]: With dead ends: 2061 [2021-10-13 19:09:47,462 INFO L226 Difference]: Without dead ends: 2061 [2021-10-13 19:09:47,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-10-13 19:09:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1673. [2021-10-13 19:09:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1660 states have (on average 3.0487951807228915) internal successors, (5061), 1672 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states 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 19:09:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 5061 transitions. [2021-10-13 19:09:47,522 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 5061 transitions. Word has length 15 [2021-10-13 19:09:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:47,522 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 5061 transitions. [2021-10-13 19:09:47,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 5061 transitions. [2021-10-13 19:09:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:09:47,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:47,524 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:47,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:47,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 19:09:47,740 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -155672968, now seen corresponding path program 2 times [2021-10-13 19:09:47,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:47,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460924763] [2021-10-13 19:09:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:47,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:47,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:47,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948809593] [2021-10-13 19:09:47,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:47,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:47,749 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:47,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 19:09:47,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:47,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:47,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:09:47,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 19:09:47,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:47,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460924763] [2021-10-13 19:09:47,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:47,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948809593] [2021-10-13 19:09:47,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948809593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:47,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:47,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:47,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065073682] [2021-10-13 19:09:47,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:47,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:47,950 INFO L87 Difference]: Start difference. First operand 1673 states and 5061 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:48,001 INFO L93 Difference]: Finished difference Result 1719 states and 5032 transitions. [2021-10-13 19:09:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:09:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:48,016 INFO L225 Difference]: With dead ends: 1719 [2021-10-13 19:09:48,016 INFO L226 Difference]: Without dead ends: 1629 [2021-10-13 19:09:48,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:09:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-10-13 19:09:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1495. [2021-10-13 19:09:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1484 states have (on average 3.004043126684636) internal successors, (4458), 1494 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states 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 19:09:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 4458 transitions. [2021-10-13 19:09:48,064 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 4458 transitions. Word has length 16 [2021-10-13 19:09:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:48,064 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 4458 transitions. [2021-10-13 19:09:48,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 4458 transitions. [2021-10-13 19:09:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:09:48,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:48,066 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:48,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:48,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 19:09:48,281 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:48,281 INFO L82 PathProgramCache]: Analyzing trace with hash -251646094, now seen corresponding path program 1 times [2021-10-13 19:09:48,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:48,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945864962] [2021-10-13 19:09:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:48,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:48,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:48,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135375343] [2021-10-13 19:09:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:48,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:48,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:48,290 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:48,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 19:09:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:09:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:09:48,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:09:48,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:48,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945864962] [2021-10-13 19:09:48,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:48,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135375343] [2021-10-13 19:09:48,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135375343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:48,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:48,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 19:09:48,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796837184] [2021-10-13 19:09:48,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:09:48,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:09:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:09:48,541 INFO L87 Difference]: Start difference. First operand 1495 states and 4458 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:48,796 INFO L93 Difference]: Finished difference Result 3671 states and 10388 transitions. [2021-10-13 19:09:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:09:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:09:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:48,811 INFO L225 Difference]: With dead ends: 3671 [2021-10-13 19:09:48,811 INFO L226 Difference]: Without dead ends: 3465 [2021-10-13 19:09:48,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:09:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2021-10-13 19:09:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2019. [2021-10-13 19:09:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2008 states have (on average 3.0154382470119523) internal successors, (6055), 2018 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states 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 19:09:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6055 transitions. [2021-10-13 19:09:48,890 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6055 transitions. Word has length 16 [2021-10-13 19:09:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:48,890 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 6055 transitions. [2021-10-13 19:09:48,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6055 transitions. [2021-10-13 19:09:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:09:48,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:48,893 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:48,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:49,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:49,108 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1562549915, now seen corresponding path program 2 times [2021-10-13 19:09:49,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:49,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562900711] [2021-10-13 19:09:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:49,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:49,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:49,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525765418] [2021-10-13 19:09:49,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:49,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:49,117 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:49,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 19:09:49,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:49,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:49,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:09:49,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 19:09:49,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:49,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562900711] [2021-10-13 19:09:49,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:49,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525765418] [2021-10-13 19:09:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525765418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:09:49,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:09:49,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:09:49,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868133629] [2021-10-13 19:09:49,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:49,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:49,350 INFO L87 Difference]: Start difference. First operand 2019 states and 6055 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:49,464 INFO L93 Difference]: Finished difference Result 2309 states and 6671 transitions. [2021-10-13 19:09:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:09:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:49,475 INFO L225 Difference]: With dead ends: 2309 [2021-10-13 19:09:49,475 INFO L226 Difference]: Without dead ends: 2309 [2021-10-13 19:09:49,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:09:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2021-10-13 19:09:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2019. [2021-10-13 19:09:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2008 states have (on average 2.975597609561753) internal successors, (5975), 2018 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states 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 19:09:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 5975 transitions. [2021-10-13 19:09:49,536 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 5975 transitions. Word has length 17 [2021-10-13 19:09:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:49,537 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 5975 transitions. [2021-10-13 19:09:49,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 5975 transitions. [2021-10-13 19:09:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:09:49,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:49,538 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:49,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:49,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 19:09:49,752 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1124362990, now seen corresponding path program 2 times [2021-10-13 19:09:49,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:49,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162746140] [2021-10-13 19:09:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:49,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:49,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:49,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692295622] [2021-10-13 19:09:49,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:09:49,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:49,760 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:49,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 19:09:49,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:09:49,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:09:49,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:51,547 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:09:53,695 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:09:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-13 19:09:53,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:53,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162746140] [2021-10-13 19:09:53,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:53,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692295622] [2021-10-13 19:09:53,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692295622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:53,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:53,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:53,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515040625] [2021-10-13 19:09:53,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:53,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:53,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:09:53,698 INFO L87 Difference]: Start difference. First operand 2019 states and 5975 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:55,706 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:09:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:09:55,715 INFO L93 Difference]: Finished difference Result 2021 states and 5979 transitions. [2021-10-13 19:09:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:09:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:09:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:09:55,723 INFO L225 Difference]: With dead ends: 2021 [2021-10-13 19:09:55,723 INFO L226 Difference]: Without dead ends: 2021 [2021-10-13 19:09:55,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5501.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:09:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-10-13 19:09:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2020. [2021-10-13 19:09:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2009 states have (on average 2.9751119960179193) internal successors, (5977), 2019 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states 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 19:09:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 5977 transitions. [2021-10-13 19:09:55,798 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 5977 transitions. Word has length 17 [2021-10-13 19:09:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:09:55,799 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 5977 transitions. [2021-10-13 19:09:55,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:09:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 5977 transitions. [2021-10-13 19:09:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:09:55,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:09:55,801 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:09:55,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 19:09:56,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:56,015 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:09:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:09:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1018947006, now seen corresponding path program 3 times [2021-10-13 19:09:56,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:09:56,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088677778] [2021-10-13 19:09:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:09:56,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:09:56,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:09:56,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487299867] [2021-10-13 19:09:56,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:09:56,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:09:56,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:09:56,025 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:09:56,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 19:09:56,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:09:56,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:09:56,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:09:56,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:09:58,103 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:09:59,964 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:09:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-13 19:09:59,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:09:59,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088677778] [2021-10-13 19:09:59,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:09:59,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487299867] [2021-10-13 19:09:59,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487299867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:09:59,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:09:59,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:09:59,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47947750] [2021-10-13 19:09:59,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:09:59,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:09:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:09:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:09:59,988 INFO L87 Difference]: Start difference. First operand 2020 states and 5977 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:01,997 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:02,011 INFO L93 Difference]: Finished difference Result 2020 states and 5977 transitions. [2021-10-13 19:10:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:10:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:02,020 INFO L225 Difference]: With dead ends: 2020 [2021-10-13 19:10:02,021 INFO L226 Difference]: Without dead ends: 2020 [2021-10-13 19:10:02,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5557.3ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-10-13 19:10:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2018. [2021-10-13 19:10:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2007 states have (on average 2.976083707025411) internal successors, (5973), 2017 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states 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 19:10:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 5973 transitions. [2021-10-13 19:10:02,083 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 5973 transitions. Word has length 17 [2021-10-13 19:10:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:02,083 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 5973 transitions. [2021-10-13 19:10:02,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 5973 transitions. [2021-10-13 19:10:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:10:02,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:02,085 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:02,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:02,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:02,306 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1480354782, now seen corresponding path program 1 times [2021-10-13 19:10:02,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:02,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429138941] [2021-10-13 19:10:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:02,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:02,312 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:02,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323324315] [2021-10-13 19:10:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:02,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:02,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:02,314 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:02,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 19:10:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:02,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:10:02,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:10:02,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:02,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429138941] [2021-10-13 19:10:02,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:02,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323324315] [2021-10-13 19:10:02,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323324315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:02,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:02,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 19:10:02,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986008756] [2021-10-13 19:10:02,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:10:02,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:10:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:02,563 INFO L87 Difference]: Start difference. First operand 2018 states and 5973 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:02,814 INFO L93 Difference]: Finished difference Result 2307 states and 6366 transitions. [2021-10-13 19:10:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:10:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:02,821 INFO L225 Difference]: With dead ends: 2307 [2021-10-13 19:10:02,821 INFO L226 Difference]: Without dead ends: 2300 [2021-10-13 19:10:02,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:10:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-10-13 19:10:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2112. [2021-10-13 19:10:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2100 states have (on average 2.8485714285714288) internal successors, (5982), 2111 states have internal predecessors, (5982), 0 states have call successors, (0), 0 states 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 19:10:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 5982 transitions. [2021-10-13 19:10:02,884 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 5982 transitions. Word has length 18 [2021-10-13 19:10:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:02,884 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 5982 transitions. [2021-10-13 19:10:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 5982 transitions. [2021-10-13 19:10:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:10:02,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:02,887 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:02,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:03,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 19:10:03,103 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash 118198621, now seen corresponding path program 1 times [2021-10-13 19:10:03,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:03,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263385195] [2021-10-13 19:10:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:03,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:03,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:03,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534121905] [2021-10-13 19:10:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:03,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:03,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:03,112 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:03,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 19:10:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:03,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:10:03,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:10:03,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:03,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263385195] [2021-10-13 19:10:03,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:03,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534121905] [2021-10-13 19:10:03,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534121905] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:03,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:03,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 19:10:03,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714926945] [2021-10-13 19:10:03,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:10:03,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:10:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:10:03,425 INFO L87 Difference]: Start difference. First operand 2112 states and 5982 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:03,645 INFO L93 Difference]: Finished difference Result 3929 states and 10576 transitions. [2021-10-13 19:10:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:10:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:10:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:03,655 INFO L225 Difference]: With dead ends: 3929 [2021-10-13 19:10:03,655 INFO L226 Difference]: Without dead ends: 3440 [2021-10-13 19:10:03,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:10:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2021-10-13 19:10:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 2367. [2021-10-13 19:10:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2355 states have (on average 2.8552016985138002) internal successors, (6724), 2366 states have internal predecessors, (6724), 0 states have call successors, (0), 0 states 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 19:10:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 6724 transitions. [2021-10-13 19:10:03,748 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 6724 transitions. Word has length 18 [2021-10-13 19:10:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:03,748 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 6724 transitions. [2021-10-13 19:10:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6724 transitions. [2021-10-13 19:10:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 19:10:03,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:03,750 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:03,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:03,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 19:10:03,965 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:03,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1628115914, now seen corresponding path program 1 times [2021-10-13 19:10:03,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:03,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018905355] [2021-10-13 19:10:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:03,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:03,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:03,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439166620] [2021-10-13 19:10:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:03,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:03,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:03,983 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:03,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 19:10:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:10:04,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:10:04,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018905355] [2021-10-13 19:10:04,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:04,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439166620] [2021-10-13 19:10:04,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439166620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:04,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:04,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-13 19:10:04,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651486630] [2021-10-13 19:10:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:10:04,212 INFO L87 Difference]: Start difference. First operand 2367 states and 6724 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:04,329 INFO L93 Difference]: Finished difference Result 3222 states and 9062 transitions. [2021-10-13 19:10:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 19:10:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:04,338 INFO L225 Difference]: With dead ends: 3222 [2021-10-13 19:10:04,338 INFO L226 Difference]: Without dead ends: 3222 [2021-10-13 19:10:04,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:10:04,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-10-13 19:10:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2781. [2021-10-13 19:10:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2769 states have (on average 2.930299747201156) internal successors, (8114), 2780 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states 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 19:10:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 8114 transitions. [2021-10-13 19:10:04,412 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 8114 transitions. Word has length 19 [2021-10-13 19:10:04,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:04,412 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 8114 transitions. [2021-10-13 19:10:04,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 8114 transitions. [2021-10-13 19:10:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:10:04,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:04,415 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:04,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:04,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 19:10:04,630 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash 332515662, now seen corresponding path program 2 times [2021-10-13 19:10:04,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:04,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658384316] [2021-10-13 19:10:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:04,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:04,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:04,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424379806] [2021-10-13 19:10:04,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:10:04,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:04,648 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:04,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 19:10:04,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:10:04,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:04,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:04,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:06,494 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:08,738 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-13 19:10:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:08,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658384316] [2021-10-13 19:10:08,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:08,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424379806] [2021-10-13 19:10:08,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424379806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:08,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:08,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:08,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677397173] [2021-10-13 19:10:08,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:08,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:08,756 INFO L87 Difference]: Start difference. First operand 2781 states and 8114 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:10,764 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:10,774 INFO L93 Difference]: Finished difference Result 2786 states and 8127 transitions. [2021-10-13 19:10:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 19:10:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:10,780 INFO L225 Difference]: With dead ends: 2786 [2021-10-13 19:10:10,780 INFO L226 Difference]: Without dead ends: 2786 [2021-10-13 19:10:10,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5644.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-10-13 19:10:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2783. [2021-10-13 19:10:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2771 states have (on average 2.929989173583544) internal successors, (8119), 2782 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states 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 19:10:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 8119 transitions. [2021-10-13 19:10:10,845 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 8119 transitions. Word has length 20 [2021-10-13 19:10:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:10,845 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 8119 transitions. [2021-10-13 19:10:10,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 8119 transitions. [2021-10-13 19:10:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:10:10,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:10,848 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:10,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 19:10:11,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:11,049 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:11,049 INFO L82 PathProgramCache]: Analyzing trace with hash 323255652, now seen corresponding path program 3 times [2021-10-13 19:10:11,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:11,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223511864] [2021-10-13 19:10:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:11,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:11,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:11,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674607075] [2021-10-13 19:10:11,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:10:11,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:11,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:11,059 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:11,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 19:10:11,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:10:11,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:11,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:11,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:12,848 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:14,762 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-13 19:10:14,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:14,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223511864] [2021-10-13 19:10:14,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:14,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674607075] [2021-10-13 19:10:14,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674607075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:14,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:14,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:14,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558929715] [2021-10-13 19:10:14,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:14,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:14,765 INFO L87 Difference]: Start difference. First operand 2783 states and 8119 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:16,773 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:16,783 INFO L93 Difference]: Finished difference Result 2786 states and 8127 transitions. [2021-10-13 19:10:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:16,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 19:10:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:16,789 INFO L225 Difference]: With dead ends: 2786 [2021-10-13 19:10:16,789 INFO L226 Difference]: Without dead ends: 2786 [2021-10-13 19:10:16,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5248.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-10-13 19:10:16,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2783. [2021-10-13 19:10:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2771 states have (on average 2.929989173583544) internal successors, (8119), 2782 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states 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 19:10:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 8119 transitions. [2021-10-13 19:10:16,843 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 8119 transitions. Word has length 20 [2021-10-13 19:10:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:16,843 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 8119 transitions. [2021-10-13 19:10:16,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 8119 transitions. [2021-10-13 19:10:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:10:16,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:16,846 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:16,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:17,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 19:10:17,060 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:17,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1308276700, now seen corresponding path program 4 times [2021-10-13 19:10:17,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:17,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16388201] [2021-10-13 19:10:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:17,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:17,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:17,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266523792] [2021-10-13 19:10:17,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:10:17,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:17,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:17,070 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:17,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 19:10:17,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:10:17,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:17,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:17,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:19,123 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:21,360 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-13 19:10:21,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:21,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16388201] [2021-10-13 19:10:21,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:21,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266523792] [2021-10-13 19:10:21,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266523792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:21,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:21,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983910538] [2021-10-13 19:10:21,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:21,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:21,393 INFO L87 Difference]: Start difference. First operand 2783 states and 8119 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:23,401 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:23,411 INFO L93 Difference]: Finished difference Result 2785 states and 8124 transitions. [2021-10-13 19:10:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 19:10:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:23,416 INFO L225 Difference]: With dead ends: 2785 [2021-10-13 19:10:23,417 INFO L226 Difference]: Without dead ends: 2785 [2021-10-13 19:10:23,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5834.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-10-13 19:10:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2780. [2021-10-13 19:10:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2768 states have (on average 2.9302745664739884) internal successors, (8111), 2779 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states 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 19:10:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 8111 transitions. [2021-10-13 19:10:23,469 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 8111 transitions. Word has length 20 [2021-10-13 19:10:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:23,469 INFO L470 AbstractCegarLoop]: Abstraction has 2780 states and 8111 transitions. [2021-10-13 19:10:23,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 8111 transitions. [2021-10-13 19:10:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:10:23,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:23,473 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:23,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:23,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:23,688 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash 791180852, now seen corresponding path program 1 times [2021-10-13 19:10:23,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:23,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957063563] [2021-10-13 19:10:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:23,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:23,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:23,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189841427] [2021-10-13 19:10:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:23,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:23,698 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:23,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 19:10:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:23,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:10:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 19:10:24,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:24,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957063563] [2021-10-13 19:10:24,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:24,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189841427] [2021-10-13 19:10:24,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189841427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:24,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:24,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 19:10:24,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334809215] [2021-10-13 19:10:24,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:10:24,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:10:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:10:24,430 INFO L87 Difference]: Start difference. First operand 2780 states and 8111 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:24,828 INFO L93 Difference]: Finished difference Result 2889 states and 8333 transitions. [2021-10-13 19:10:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:10:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:10:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:24,838 INFO L225 Difference]: With dead ends: 2889 [2021-10-13 19:10:24,838 INFO L226 Difference]: Without dead ends: 2888 [2021-10-13 19:10:24,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 369.1ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:10:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-10-13 19:10:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2785. [2021-10-13 19:10:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2773 states have (on average 2.9271547060944827) internal successors, (8117), 2784 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states 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 19:10:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 8117 transitions. [2021-10-13 19:10:24,912 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 8117 transitions. Word has length 21 [2021-10-13 19:10:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:24,913 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 8117 transitions. [2021-10-13 19:10:24,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 8117 transitions. [2021-10-13 19:10:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:10:24,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:24,916 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:24,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:25,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 19:10:25,132 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 421592205, now seen corresponding path program 1 times [2021-10-13 19:10:25,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:25,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251717861] [2021-10-13 19:10:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:25,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:25,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:25,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60068734] [2021-10-13 19:10:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:25,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:25,142 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:25,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 19:10:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:25,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:25,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:10:25,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:25,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251717861] [2021-10-13 19:10:25,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:25,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60068734] [2021-10-13 19:10:25,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60068734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:25,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:25,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 19:10:25,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285565490] [2021-10-13 19:10:25,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:10:25,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:10:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:25,437 INFO L87 Difference]: Start difference. First operand 2785 states and 8117 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:25,481 INFO L93 Difference]: Finished difference Result 4296 states and 12121 transitions. [2021-10-13 19:10:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:10:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:25,491 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 19:10:25,491 INFO L226 Difference]: Without dead ends: 4296 [2021-10-13 19:10:25,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-10-13 19:10:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3315. [2021-10-13 19:10:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3303 states have (on average 2.96094459582198) internal successors, (9780), 3314 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states 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 19:10:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 9780 transitions. [2021-10-13 19:10:25,621 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 9780 transitions. Word has length 21 [2021-10-13 19:10:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:25,622 INFO L470 AbstractCegarLoop]: Abstraction has 3315 states and 9780 transitions. [2021-10-13 19:10:25,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 9780 transitions. [2021-10-13 19:10:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:10:25,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:25,627 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:25,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:25,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:25,842 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 137719852, now seen corresponding path program 2 times [2021-10-13 19:10:25,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:25,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078386400] [2021-10-13 19:10:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:25,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:25,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:25,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484573594] [2021-10-13 19:10:25,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:10:25,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:25,852 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 19:10:26,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:10:26,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:26,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:10:26,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:10:26,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:26,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078386400] [2021-10-13 19:10:26,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:26,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484573594] [2021-10-13 19:10:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484573594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:26,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:26,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:26,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51796808] [2021-10-13 19:10:26,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:26,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:10:26,168 INFO L87 Difference]: Start difference. First operand 3315 states and 9780 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:26,286 INFO L93 Difference]: Finished difference Result 3394 states and 9847 transitions. [2021-10-13 19:10:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:10:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:26,294 INFO L225 Difference]: With dead ends: 3394 [2021-10-13 19:10:26,295 INFO L226 Difference]: Without dead ends: 3147 [2021-10-13 19:10:26,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-10-13 19:10:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2310. [2021-10-13 19:10:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 2300 states have (on average 2.836521739130435) internal successors, (6524), 2309 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states 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 19:10:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 6524 transitions. [2021-10-13 19:10:26,349 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 6524 transitions. Word has length 22 [2021-10-13 19:10:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:26,350 INFO L470 AbstractCegarLoop]: Abstraction has 2310 states and 6524 transitions. [2021-10-13 19:10:26,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 6524 transitions. [2021-10-13 19:10:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:10:26,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:26,352 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:26,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:26,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-13 19:10:26,566 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:26,566 INFO L82 PathProgramCache]: Analyzing trace with hash 304413377, now seen corresponding path program 1 times [2021-10-13 19:10:26,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:26,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002585314] [2021-10-13 19:10:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:26,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:26,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:26,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643562813] [2021-10-13 19:10:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:26,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:26,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:26,577 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:26,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 19:10:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:26,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:10:26,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:10:26,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:26,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002585314] [2021-10-13 19:10:26,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:26,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643562813] [2021-10-13 19:10:26,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643562813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:26,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 19:10:26,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599469362] [2021-10-13 19:10:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:10:26,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:10:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:26,916 INFO L87 Difference]: Start difference. First operand 2310 states and 6524 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:27,003 INFO L93 Difference]: Finished difference Result 2304 states and 6479 transitions. [2021-10-13 19:10:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:10:27,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:10:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:27,010 INFO L225 Difference]: With dead ends: 2304 [2021-10-13 19:10:27,010 INFO L226 Difference]: Without dead ends: 2304 [2021-10-13 19:10:27,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:10:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2021-10-13 19:10:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2245. [2021-10-13 19:10:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.8465324384787474) internal successors, (6362), 2244 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states 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 19:10:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 6362 transitions. [2021-10-13 19:10:27,066 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 6362 transitions. Word has length 22 [2021-10-13 19:10:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:27,066 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 6362 transitions. [2021-10-13 19:10:27,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 6362 transitions. [2021-10-13 19:10:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:10:27,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:27,069 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:27,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:27,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-13 19:10:27,282 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1170896099, now seen corresponding path program 1 times [2021-10-13 19:10:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:27,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228270696] [2021-10-13 19:10:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:27,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:27,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:27,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752494944] [2021-10-13 19:10:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:27,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:27,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:27,295 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:27,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 19:10:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:27,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:27,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:10:27,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:27,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228270696] [2021-10-13 19:10:27,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:27,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752494944] [2021-10-13 19:10:27,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752494944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:10:27,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:10:27,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:10:27,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775902622] [2021-10-13 19:10:27,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:10:27,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:10:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:27,706 INFO L87 Difference]: Start difference. First operand 2245 states and 6362 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:27,822 INFO L93 Difference]: Finished difference Result 2529 states and 6959 transitions. [2021-10-13 19:10:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:10:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:27,832 INFO L225 Difference]: With dead ends: 2529 [2021-10-13 19:10:27,832 INFO L226 Difference]: Without dead ends: 2529 [2021-10-13 19:10:27,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2021-10-13 19:10:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2199. [2021-10-13 19:10:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2191 states have (on average 2.794157918758558) internal successors, (6122), 2198 states have internal predecessors, (6122), 0 states have call successors, (0), 0 states 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 19:10:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 6122 transitions. [2021-10-13 19:10:27,884 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 6122 transitions. Word has length 23 [2021-10-13 19:10:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:27,885 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 6122 transitions. [2021-10-13 19:10:27,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 6122 transitions. [2021-10-13 19:10:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:10:27,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:27,888 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:27,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:28,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:28,102 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1170896061, now seen corresponding path program 1 times [2021-10-13 19:10:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:28,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54914623] [2021-10-13 19:10:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:28,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:28,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:28,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544814847] [2021-10-13 19:10:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:28,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:28,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:28,121 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:28,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 19:10:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:28,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:10:28,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 19:10:28,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:28,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54914623] [2021-10-13 19:10:28,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544814847] [2021-10-13 19:10:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544814847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:28,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:28,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 19:10:28,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175902542] [2021-10-13 19:10:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:10:28,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:10:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:10:28,566 INFO L87 Difference]: Start difference. First operand 2199 states and 6122 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:28,863 INFO L93 Difference]: Finished difference Result 2597 states and 6967 transitions. [2021-10-13 19:10:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:10:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:10:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:28,870 INFO L225 Difference]: With dead ends: 2597 [2021-10-13 19:10:28,870 INFO L226 Difference]: Without dead ends: 2427 [2021-10-13 19:10:28,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:10:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-10-13 19:10:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1966. [2021-10-13 19:10:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1958 states have (on average 2.725229826353422) internal successors, (5336), 1965 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states 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 19:10:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 5336 transitions. [2021-10-13 19:10:28,922 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 5336 transitions. Word has length 23 [2021-10-13 19:10:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:28,922 INFO L470 AbstractCegarLoop]: Abstraction has 1966 states and 5336 transitions. [2021-10-13 19:10:28,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:28,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 5336 transitions. [2021-10-13 19:10:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:10:28,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:28,925 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:28,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:29,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 19:10:29,142 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:29,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1426674834, now seen corresponding path program 2 times [2021-10-13 19:10:29,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:29,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156999462] [2021-10-13 19:10:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:29,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:29,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:29,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18807099] [2021-10-13 19:10:29,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:10:29,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:29,155 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:29,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 19:10:29,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:10:29,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:29,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:29,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:31,444 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:33,705 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 3 not checked. [2021-10-13 19:10:33,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:33,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156999462] [2021-10-13 19:10:33,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:33,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18807099] [2021-10-13 19:10:33,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18807099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:33,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:33,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:33,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919336206] [2021-10-13 19:10:33,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:33,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:33,742 INFO L87 Difference]: Start difference. First operand 1966 states and 5336 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:35,751 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:35,762 INFO L93 Difference]: Finished difference Result 1976 states and 5359 transitions. [2021-10-13 19:10:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:10:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:35,767 INFO L225 Difference]: With dead ends: 1976 [2021-10-13 19:10:35,767 INFO L226 Difference]: Without dead ends: 1976 [2021-10-13 19:10:35,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6020.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-10-13 19:10:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1968. [2021-10-13 19:10:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1960 states have (on average 2.725) internal successors, (5341), 1967 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states 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 19:10:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 5341 transitions. [2021-10-13 19:10:35,856 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 5341 transitions. Word has length 23 [2021-10-13 19:10:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 5341 transitions. [2021-10-13 19:10:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 5341 transitions. [2021-10-13 19:10:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:10:35,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:35,859 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:35,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 19:10:36,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:36,075 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1426667518, now seen corresponding path program 1 times [2021-10-13 19:10:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:36,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035405316] [2021-10-13 19:10:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:36,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:36,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:36,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761374874] [2021-10-13 19:10:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:36,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:36,085 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:36,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 19:10:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:10:36,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:10:36,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:10:36,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:36,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035405316] [2021-10-13 19:10:36,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:36,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761374874] [2021-10-13 19:10:36,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761374874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:36,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:36,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 19:10:36,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712201890] [2021-10-13 19:10:36,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:10:36,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:10:36,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:10:36,537 INFO L87 Difference]: Start difference. First operand 1968 states and 5341 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:36,858 INFO L93 Difference]: Finished difference Result 3808 states and 9922 transitions. [2021-10-13 19:10:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:10:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:10:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:36,865 INFO L225 Difference]: With dead ends: 3808 [2021-10-13 19:10:36,865 INFO L226 Difference]: Without dead ends: 2738 [2021-10-13 19:10:36,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:10:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-10-13 19:10:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2074. [2021-10-13 19:10:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2066 states have (on average 2.730396902226525) internal successors, (5641), 2073 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states 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 19:10:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5641 transitions. [2021-10-13 19:10:36,916 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5641 transitions. Word has length 23 [2021-10-13 19:10:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:36,916 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 5641 transitions. [2021-10-13 19:10:36,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5641 transitions. [2021-10-13 19:10:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:10:36,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:36,918 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:36,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:37,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 19:10:37,134 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash -394161239, now seen corresponding path program 2 times [2021-10-13 19:10:37,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:37,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489149110] [2021-10-13 19:10:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:37,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:37,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:37,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245198361] [2021-10-13 19:10:37,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:10:37,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:37,145 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:37,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 19:10:37,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:10:37,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:10:37,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-13 19:10:37,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:37,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489149110] [2021-10-13 19:10:37,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:37,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245198361] [2021-10-13 19:10:37,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245198361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:37,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:37,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:37,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476684643] [2021-10-13 19:10:37,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:37,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:10:37,751 INFO L87 Difference]: Start difference. First operand 2074 states and 5641 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:37,822 INFO L93 Difference]: Finished difference Result 1968 states and 5275 transitions. [2021-10-13 19:10:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:10:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:37,825 INFO L225 Difference]: With dead ends: 1968 [2021-10-13 19:10:37,825 INFO L226 Difference]: Without dead ends: 1615 [2021-10-13 19:10:37,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:10:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-10-13 19:10:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1422. [2021-10-13 19:10:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1420 states have (on average 2.55) internal successors, (3621), 1421 states have internal predecessors, (3621), 0 states have call successors, (0), 0 states 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 19:10:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 3621 transitions. [2021-10-13 19:10:37,846 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 3621 transitions. Word has length 25 [2021-10-13 19:10:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:37,846 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 3621 transitions. [2021-10-13 19:10:37,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 3621 transitions. [2021-10-13 19:10:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:10:37,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:37,847 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:37,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:38,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 19:10:38,048 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -833546577, now seen corresponding path program 2 times [2021-10-13 19:10:38,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:38,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201629725] [2021-10-13 19:10:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:38,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:38,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:38,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531693217] [2021-10-13 19:10:38,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:10:38,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:38,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:38,072 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:38,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 19:10:38,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:10:38,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:38,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:40,378 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:42,555 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-13 19:10:42,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:42,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201629725] [2021-10-13 19:10:42,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:42,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531693217] [2021-10-13 19:10:42,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531693217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:42,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:42,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:42,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3290694] [2021-10-13 19:10:42,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:42,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:42,570 INFO L87 Difference]: Start difference. First operand 1422 states and 3621 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:44,576 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:44,582 INFO L93 Difference]: Finished difference Result 1431 states and 3645 transitions. [2021-10-13 19:10:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:10:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:10:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:44,585 INFO L225 Difference]: With dead ends: 1431 [2021-10-13 19:10:44,585 INFO L226 Difference]: Without dead ends: 1431 [2021-10-13 19:10:44,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5904.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-10-13 19:10:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1423. [2021-10-13 19:10:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1421 states have (on average 2.5503166783954963) internal successors, (3624), 1422 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states 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 19:10:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3624 transitions. [2021-10-13 19:10:44,608 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3624 transitions. Word has length 25 [2021-10-13 19:10:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:44,608 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 3624 transitions. [2021-10-13 19:10:44,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3624 transitions. [2021-10-13 19:10:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:10:44,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:44,609 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:44,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-13 19:10:44,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 19:10:44,810 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:44,811 INFO L82 PathProgramCache]: Analyzing trace with hash -836966311, now seen corresponding path program 3 times [2021-10-13 19:10:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:44,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116507840] [2021-10-13 19:10:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:44,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:44,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:44,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883940567] [2021-10-13 19:10:44,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:10:44,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:44,829 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:44,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 19:10:45,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:10:45,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:46,953 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:49,063 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-13 19:10:49,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:49,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116507840] [2021-10-13 19:10:49,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:49,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883940567] [2021-10-13 19:10:49,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883940567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:49,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:49,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:49,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015022764] [2021-10-13 19:10:49,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:49,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:49,066 INFO L87 Difference]: Start difference. First operand 1423 states and 3624 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:51,077 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:51,082 INFO L93 Difference]: Finished difference Result 1431 states and 3642 transitions. [2021-10-13 19:10:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:10:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:51,085 INFO L225 Difference]: With dead ends: 1431 [2021-10-13 19:10:51,086 INFO L226 Difference]: Without dead ends: 1431 [2021-10-13 19:10:51,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5648.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-10-13 19:10:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1423. [2021-10-13 19:10:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1421 states have (on average 2.5503166783954963) internal successors, (3624), 1422 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states 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 19:10:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3624 transitions. [2021-10-13 19:10:51,110 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3624 transitions. Word has length 25 [2021-10-13 19:10:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:51,110 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 3624 transitions. [2021-10-13 19:10:51,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3624 transitions. [2021-10-13 19:10:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:10:51,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:51,112 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:51,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:51,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 19:10:51,328 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:51,328 INFO L82 PathProgramCache]: Analyzing trace with hash -843996987, now seen corresponding path program 3 times [2021-10-13 19:10:51,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:51,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479576906] [2021-10-13 19:10:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:51,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:51,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:51,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771359259] [2021-10-13 19:10:51,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:10:51,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:51,349 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:51,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 19:10:51,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:10:51,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:51,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:51,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:10:53,658 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:55,728 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:10:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-13 19:10:55,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:10:55,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479576906] [2021-10-13 19:10:55,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:10:55,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771359259] [2021-10-13 19:10:55,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771359259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:10:55,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:10:55,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:10:55,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77835056] [2021-10-13 19:10:55,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:10:55,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:10:55,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:10:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:10:55,732 INFO L87 Difference]: Start difference. First operand 1423 states and 3624 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:57,739 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:10:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:10:57,744 INFO L93 Difference]: Finished difference Result 1447 states and 3694 transitions. [2021-10-13 19:10:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:10:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:10:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:10:57,748 INFO L225 Difference]: With dead ends: 1447 [2021-10-13 19:10:57,748 INFO L226 Difference]: Without dead ends: 1447 [2021-10-13 19:10:57,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5748.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:10:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2021-10-13 19:10:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1430. [2021-10-13 19:10:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1428 states have (on average 2.553221288515406) internal successors, (3646), 1429 states have internal predecessors, (3646), 0 states have call successors, (0), 0 states 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 19:10:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 3646 transitions. [2021-10-13 19:10:57,774 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 3646 transitions. Word has length 25 [2021-10-13 19:10:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:10:57,774 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 3646 transitions. [2021-10-13 19:10:57,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:10:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 3646 transitions. [2021-10-13 19:10:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:10:57,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:10:57,776 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:10:57,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:10:57,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:57,978 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:10:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:10:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash -191650577, now seen corresponding path program 4 times [2021-10-13 19:10:57,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:10:57,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162377769] [2021-10-13 19:10:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:10:57,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:10:57,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:10:57,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510895156] [2021-10-13 19:10:57,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:10:57,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:10:57,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:10:57,997 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:10:57,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 19:10:58,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:10:58,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:10:58,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:10:58,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:00,087 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:02,183 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-13 19:11:02,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:02,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162377769] [2021-10-13 19:11:02,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:02,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510895156] [2021-10-13 19:11:02,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510895156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:02,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:02,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:11:02,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117240353] [2021-10-13 19:11:02,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:11:02,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:11:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:11:02,207 INFO L87 Difference]: Start difference. First operand 1430 states and 3646 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:04,215 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:11:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:04,222 INFO L93 Difference]: Finished difference Result 1441 states and 3672 transitions. [2021-10-13 19:11:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:11:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:11:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:04,226 INFO L225 Difference]: With dead ends: 1441 [2021-10-13 19:11:04,226 INFO L226 Difference]: Without dead ends: 1441 [2021-10-13 19:11:04,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5571.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:11:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-10-13 19:11:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1432. [2021-10-13 19:11:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1430 states have (on average 2.553146853146853) internal successors, (3651), 1431 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states 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 19:11:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 3651 transitions. [2021-10-13 19:11:04,260 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 3651 transitions. Word has length 25 [2021-10-13 19:11:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:04,260 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 3651 transitions. [2021-10-13 19:11:04,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 3651 transitions. [2021-10-13 19:11:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:11:04,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:04,286 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:04,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:04,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:04,493 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -191657893, now seen corresponding path program 4 times [2021-10-13 19:11:04,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:04,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238096591] [2021-10-13 19:11:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:04,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:04,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:04,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61008682] [2021-10-13 19:11:04,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:11:04,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:04,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:04,532 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:04,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 19:11:04,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:11:04,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:11:04,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:06,875 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:09,171 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-13 19:11:09,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:09,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238096591] [2021-10-13 19:11:09,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:09,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61008682] [2021-10-13 19:11:09,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61008682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:09,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:09,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:11:09,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813474816] [2021-10-13 19:11:09,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:11:09,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:11:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:11:09,200 INFO L87 Difference]: Start difference. First operand 1432 states and 3651 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:11,207 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:11:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:11,212 INFO L93 Difference]: Finished difference Result 1441 states and 3676 transitions. [2021-10-13 19:11:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:11:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:11:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:11,215 INFO L225 Difference]: With dead ends: 1441 [2021-10-13 19:11:11,215 INFO L226 Difference]: Without dead ends: 1441 [2021-10-13 19:11:11,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5997.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:11:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-10-13 19:11:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1431. [2021-10-13 19:11:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1429 states have (on average 2.5528341497550735) internal successors, (3648), 1430 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states 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 19:11:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3648 transitions. [2021-10-13 19:11:11,249 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3648 transitions. Word has length 25 [2021-10-13 19:11:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:11,249 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 3648 transitions. [2021-10-13 19:11:11,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3648 transitions. [2021-10-13 19:11:11,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:11:11,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:11,250 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:11,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:11,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:11,452 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2135309507, now seen corresponding path program 5 times [2021-10-13 19:11:11,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:11,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650052033] [2021-10-13 19:11:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:11,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:11,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:11,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320656287] [2021-10-13 19:11:11,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:11:11,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:11,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:11,465 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 19:11:16,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:11:16,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:16,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:11:16,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 19:11:16,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:16,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650052033] [2021-10-13 19:11:16,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:16,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320656287] [2021-10-13 19:11:16,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320656287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:16,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:16,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 19:11:16,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73884638] [2021-10-13 19:11:16,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:11:16,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:11:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:11:16,693 INFO L87 Difference]: Start difference. First operand 1431 states and 3648 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:16,722 INFO L93 Difference]: Finished difference Result 1761 states and 4501 transitions. [2021-10-13 19:11:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:11:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:11:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:16,726 INFO L225 Difference]: With dead ends: 1761 [2021-10-13 19:11:16,726 INFO L226 Difference]: Without dead ends: 1761 [2021-10-13 19:11:16,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:11:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-10-13 19:11:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1757. [2021-10-13 19:11:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1755 states have (on average 2.5589743589743588) internal successors, (4491), 1756 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states 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 19:11:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 4491 transitions. [2021-10-13 19:11:16,752 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 4491 transitions. Word has length 25 [2021-10-13 19:11:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:16,753 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 4491 transitions. [2021-10-13 19:11:16,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 4491 transitions. [2021-10-13 19:11:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:11:16,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:16,755 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:16,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:16,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:11:16,971 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:16,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1478041352, now seen corresponding path program 6 times [2021-10-13 19:11:16,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:16,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699780194] [2021-10-13 19:11:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:16,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:16,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:16,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010455750] [2021-10-13 19:11:16,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:11:16,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:16,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:16,981 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:17,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 19:11:17,324 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 19:11:17,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:17,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:11:17,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:19,264 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:21,630 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 4 not checked. [2021-10-13 19:11:21,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:21,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699780194] [2021-10-13 19:11:21,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:21,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010455750] [2021-10-13 19:11:21,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010455750] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:21,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:21,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:11:21,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869373175] [2021-10-13 19:11:21,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:11:21,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:11:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:11:21,679 INFO L87 Difference]: Start difference. First operand 1757 states and 4491 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:23,684 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:11:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:23,691 INFO L93 Difference]: Finished difference Result 1767 states and 4515 transitions. [2021-10-13 19:11:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:11:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 19:11:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:23,695 INFO L225 Difference]: With dead ends: 1767 [2021-10-13 19:11:23,695 INFO L226 Difference]: Without dead ends: 1767 [2021-10-13 19:11:23,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5940.3ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:11:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-10-13 19:11:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1755. [2021-10-13 19:11:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1753 states have (on average 2.5596120935539077) internal successors, (4487), 1754 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states 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 19:11:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 4487 transitions. [2021-10-13 19:11:23,719 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 4487 transitions. Word has length 27 [2021-10-13 19:11:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:23,719 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 4487 transitions. [2021-10-13 19:11:23,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 4487 transitions. [2021-10-13 19:11:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:11:23,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:23,721 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:23,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:23,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:23,922 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1478034036, now seen corresponding path program 5 times [2021-10-13 19:11:23,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:23,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295093769] [2021-10-13 19:11:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:23,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:23,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:23,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488505773] [2021-10-13 19:11:23,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:11:23,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:23,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:23,933 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:23,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 19:11:42,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 19:11:42,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:42,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:11:42,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:11:42,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:42,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295093769] [2021-10-13 19:11:42,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:42,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488505773] [2021-10-13 19:11:42,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488505773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:42,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 19:11:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701398572] [2021-10-13 19:11:42,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:11:42,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:11:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:11:42,866 INFO L87 Difference]: Start difference. First operand 1755 states and 4487 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) 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 19:11:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:43,199 INFO L93 Difference]: Finished difference Result 3394 states and 8433 transitions. [2021-10-13 19:11:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:11:43,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) 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 27 [2021-10-13 19:11:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:43,206 INFO L225 Difference]: With dead ends: 3394 [2021-10-13 19:11:43,206 INFO L226 Difference]: Without dead ends: 1757 [2021-10-13 19:11:43,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 240.5ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:11:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-10-13 19:11:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1757. [2021-10-13 19:11:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1755 states have (on average 2.5578347578347578) internal successors, (4489), 1756 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states 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 19:11:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 4489 transitions. [2021-10-13 19:11:43,244 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 4489 transitions. Word has length 27 [2021-10-13 19:11:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:43,244 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 4489 transitions. [2021-10-13 19:11:43,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) 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 19:11:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 4489 transitions. [2021-10-13 19:11:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 19:11:43,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:43,247 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:43,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:43,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 19:11:43,462 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:43,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:43,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2072527203, now seen corresponding path program 6 times [2021-10-13 19:11:43,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:43,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107780132] [2021-10-13 19:11:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:43,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:43,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:43,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402941767] [2021-10-13 19:11:43,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:11:43,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:43,472 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:43,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 19:11:43,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 19:11:43,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:43,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:11:43,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:45,483 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:47,599 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 4 not checked. [2021-10-13 19:11:47,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:47,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107780132] [2021-10-13 19:11:47,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:47,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402941767] [2021-10-13 19:11:47,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402941767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:47,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:47,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:11:47,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176477041] [2021-10-13 19:11:47,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:11:47,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:11:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:11:47,644 INFO L87 Difference]: Start difference. First operand 1757 states and 4489 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:49,653 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:11:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:49,659 INFO L93 Difference]: Finished difference Result 1768 states and 4518 transitions. [2021-10-13 19:11:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:11:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-13 19:11:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:49,662 INFO L225 Difference]: With dead ends: 1768 [2021-10-13 19:11:49,662 INFO L226 Difference]: Without dead ends: 1768 [2021-10-13 19:11:49,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5441.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:11:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-10-13 19:11:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1754. [2021-10-13 19:11:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 2.557077625570776) internal successors, (4480), 1753 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 19:11:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 4480 transitions. [2021-10-13 19:11:49,691 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 4480 transitions. Word has length 29 [2021-10-13 19:11:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:49,691 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 4480 transitions. [2021-10-13 19:11:49,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 4480 transitions. [2021-10-13 19:11:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 19:11:49,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:49,693 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:49,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:49,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:49,894 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash 169783097, now seen corresponding path program 1 times [2021-10-13 19:11:49,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:49,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147092719] [2021-10-13 19:11:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:49,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:49,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:49,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188670682] [2021-10-13 19:11:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:49,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:49,904 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:49,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 19:11:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:11:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:11:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-13 19:11:50,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:50,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147092719] [2021-10-13 19:11:50,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:50,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188670682] [2021-10-13 19:11:50,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188670682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:50,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:50,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 19:11:50,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497697159] [2021-10-13 19:11:50,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:11:50,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:11:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:11:50,413 INFO L87 Difference]: Start difference. First operand 1754 states and 4480 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:50,446 INFO L93 Difference]: Finished difference Result 2080 states and 5323 transitions. [2021-10-13 19:11:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:11:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-13 19:11:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:50,451 INFO L225 Difference]: With dead ends: 2080 [2021-10-13 19:11:50,451 INFO L226 Difference]: Without dead ends: 2080 [2021-10-13 19:11:50,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:11:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-10-13 19:11:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2021-10-13 19:11:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2078 states have (on average 2.561597690086622) internal successors, (5323), 2079 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states 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 19:11:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5323 transitions. [2021-10-13 19:11:50,492 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5323 transitions. Word has length 29 [2021-10-13 19:11:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:50,492 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5323 transitions. [2021-10-13 19:11:50,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5323 transitions. [2021-10-13 19:11:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 19:11:50,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:50,495 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:50,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-13 19:11:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 19:11:50,696 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:50,697 INFO L82 PathProgramCache]: Analyzing trace with hash -47136428, now seen corresponding path program 2 times [2021-10-13 19:11:50,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:50,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202848140] [2021-10-13 19:11:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:50,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:50,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:50,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987523039] [2021-10-13 19:11:50,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:11:50,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:50,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:50,708 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:50,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 19:11:51,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:11:51,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:51,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:11:51,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:52,710 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:55,078 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:11:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2021-10-13 19:11:55,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:11:55,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202848140] [2021-10-13 19:11:55,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:11:55,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987523039] [2021-10-13 19:11:55,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987523039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:11:55,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:11:55,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:11:55,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457958406] [2021-10-13 19:11:55,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:11:55,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:11:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:11:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:11:55,080 INFO L87 Difference]: Start difference. First operand 2080 states and 5323 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:57,091 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:11:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:11:57,105 INFO L93 Difference]: Finished difference Result 2095 states and 5353 transitions. [2021-10-13 19:11:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:11:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 19:11:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:11:57,111 INFO L225 Difference]: With dead ends: 2095 [2021-10-13 19:11:57,111 INFO L226 Difference]: Without dead ends: 2095 [2021-10-13 19:11:57,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5615.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:11:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2021-10-13 19:11:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2082. [2021-10-13 19:11:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 2.5610576923076924) internal successors, (5327), 2081 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states 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 19:11:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 5327 transitions. [2021-10-13 19:11:57,165 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 5327 transitions. Word has length 31 [2021-10-13 19:11:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:11:57,165 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 5327 transitions. [2021-10-13 19:11:57,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:11:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 5327 transitions. [2021-10-13 19:11:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 19:11:57,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:11:57,169 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:11:57,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:11:57,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 19:11:57,384 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:11:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:11:57,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1064299750, now seen corresponding path program 3 times [2021-10-13 19:11:57,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:11:57,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320505306] [2021-10-13 19:11:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:11:57,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:11:57,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:11:57,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802078857] [2021-10-13 19:11:57,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:11:57,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:11:57,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:11:57,399 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:11:57,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 19:11:57,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:11:57,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:11:57,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:11:57,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:11:59,846 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:02,164 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2021-10-13 19:12:02,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:02,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320505306] [2021-10-13 19:12:02,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:02,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802078857] [2021-10-13 19:12:02,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802078857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:02,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:02,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:02,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060523773] [2021-10-13 19:12:02,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:02,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:02,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:02,180 INFO L87 Difference]: Start difference. First operand 2082 states and 5327 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:04,187 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:04,194 INFO L93 Difference]: Finished difference Result 2093 states and 5349 transitions. [2021-10-13 19:12:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:12:04,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 19:12:04,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:04,215 INFO L225 Difference]: With dead ends: 2093 [2021-10-13 19:12:04,216 INFO L226 Difference]: Without dead ends: 2093 [2021-10-13 19:12:04,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6018.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2021-10-13 19:12:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2078. [2021-10-13 19:12:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2076 states have (on average 2.5621387283236996) internal successors, (5319), 2077 states have internal predecessors, (5319), 0 states have call successors, (0), 0 states 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 19:12:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 5319 transitions. [2021-10-13 19:12:04,246 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 5319 transitions. Word has length 31 [2021-10-13 19:12:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:04,246 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 5319 transitions. [2021-10-13 19:12:04,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 5319 transitions. [2021-10-13 19:12:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 19:12:04,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:04,249 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:04,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:04,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:04,450 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash -871656503, now seen corresponding path program 1 times [2021-10-13 19:12:04,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:04,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902858412] [2021-10-13 19:12:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:04,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:04,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:04,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369524881] [2021-10-13 19:12:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:04,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:04,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:04,462 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:04,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 19:12:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:12:04,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:12:04,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 19:12:05,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:05,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902858412] [2021-10-13 19:12:05,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:05,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369524881] [2021-10-13 19:12:05,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369524881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:05,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:05,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 19:12:05,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991152879] [2021-10-13 19:12:05,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:12:05,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:12:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:12:05,217 INFO L87 Difference]: Start difference. First operand 2078 states and 5319 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:05,602 INFO L93 Difference]: Finished difference Result 4072 states and 10169 transitions. [2021-10-13 19:12:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:12:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 19:12:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:05,606 INFO L225 Difference]: With dead ends: 4072 [2021-10-13 19:12:05,606 INFO L226 Difference]: Without dead ends: 2080 [2021-10-13 19:12:05,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 334.6ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:12:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-10-13 19:12:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2021-10-13 19:12:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2078 states have (on average 2.560635226179018) internal successors, (5321), 2079 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states 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 19:12:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5321 transitions. [2021-10-13 19:12:05,683 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5321 transitions. Word has length 32 [2021-10-13 19:12:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:05,683 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5321 transitions. [2021-10-13 19:12:05,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5321 transitions. [2021-10-13 19:12:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:12:05,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:05,688 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:05,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-13 19:12:05,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:05,902 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:05,903 INFO L82 PathProgramCache]: Analyzing trace with hash 121037816, now seen corresponding path program 2 times [2021-10-13 19:12:05,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:05,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808355744] [2021-10-13 19:12:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:05,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:05,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:05,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047495780] [2021-10-13 19:12:05,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:12:05,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:05,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:05,918 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:05,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 19:12:06,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:12:06,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:12:06,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:12:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:08,327 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:10,413 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2021-10-13 19:12:10,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:10,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808355744] [2021-10-13 19:12:10,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:10,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047495780] [2021-10-13 19:12:10,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047495780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:10,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:10,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:10,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730704366] [2021-10-13 19:12:10,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:10,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:10,427 INFO L87 Difference]: Start difference. First operand 2080 states and 5321 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:12,435 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:12,442 INFO L93 Difference]: Finished difference Result 2107 states and 5386 transitions. [2021-10-13 19:12:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:12:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 19:12:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:12,447 INFO L225 Difference]: With dead ends: 2107 [2021-10-13 19:12:12,447 INFO L226 Difference]: Without dead ends: 2107 [2021-10-13 19:12:12,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5678.3ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2021-10-13 19:12:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2082. [2021-10-13 19:12:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 2.5600961538461537) internal successors, (5325), 2081 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states 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 19:12:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 5325 transitions. [2021-10-13 19:12:12,480 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 5325 transitions. Word has length 34 [2021-10-13 19:12:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:12,480 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 5325 transitions. [2021-10-13 19:12:12,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 5325 transitions. [2021-10-13 19:12:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:12:12,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:12,483 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:12,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:12,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-10-13 19:12:12,684 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash 110587406, now seen corresponding path program 3 times [2021-10-13 19:12:12,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:12,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485596484] [2021-10-13 19:12:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:12,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:12,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:12,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519051704] [2021-10-13 19:12:12,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:12:12,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:12,710 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:12,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 19:12:13,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:12:13,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:12:13,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:12:13,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:14,944 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:17,092 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2021-10-13 19:12:17,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:17,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485596484] [2021-10-13 19:12:17,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:17,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519051704] [2021-10-13 19:12:17,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519051704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:17,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:17,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:17,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841792286] [2021-10-13 19:12:17,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:17,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:17,095 INFO L87 Difference]: Start difference. First operand 2082 states and 5325 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:19,105 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:19,112 INFO L93 Difference]: Finished difference Result 2143 states and 5464 transitions. [2021-10-13 19:12:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:12:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 19:12:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:19,116 INFO L225 Difference]: With dead ends: 2143 [2021-10-13 19:12:19,116 INFO L226 Difference]: Without dead ends: 2143 [2021-10-13 19:12:19,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5549.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-10-13 19:12:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2106. [2021-10-13 19:12:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2104 states have (on average 2.560361216730038) internal successors, (5387), 2105 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states 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 19:12:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 5387 transitions. [2021-10-13 19:12:19,146 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 5387 transitions. Word has length 34 [2021-10-13 19:12:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:19,146 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 5387 transitions. [2021-10-13 19:12:19,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 5387 transitions. [2021-10-13 19:12:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:12:19,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:19,150 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:19,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:19,351 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:19,351 INFO L82 PathProgramCache]: Analyzing trace with hash -28865840, now seen corresponding path program 4 times [2021-10-13 19:12:19,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:19,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186828112] [2021-10-13 19:12:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:19,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:19,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:19,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248008345] [2021-10-13 19:12:19,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:12:19,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:19,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:19,375 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:19,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 19:12:19,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:12:19,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:12:19,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:12:19,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:21,918 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:24,175 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2021-10-13 19:12:24,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:24,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186828112] [2021-10-13 19:12:24,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:24,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248008345] [2021-10-13 19:12:24,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248008345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:24,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:24,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:24,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474409633] [2021-10-13 19:12:24,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:24,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:24,198 INFO L87 Difference]: Start difference. First operand 2106 states and 5387 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:26,207 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:26,217 INFO L93 Difference]: Finished difference Result 2134 states and 5454 transitions. [2021-10-13 19:12:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:12:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 19:12:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:26,224 INFO L225 Difference]: With dead ends: 2134 [2021-10-13 19:12:26,224 INFO L226 Difference]: Without dead ends: 2134 [2021-10-13 19:12:26,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5930.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-10-13 19:12:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2108. [2021-10-13 19:12:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2106 states have (on average 2.560778727445394) internal successors, (5393), 2107 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states 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 19:12:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5393 transitions. [2021-10-13 19:12:26,301 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5393 transitions. Word has length 34 [2021-10-13 19:12:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:26,301 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5393 transitions. [2021-10-13 19:12:26,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5393 transitions. [2021-10-13 19:12:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:12:26,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:26,305 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:26,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:26,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:26,520 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:26,521 INFO L82 PathProgramCache]: Analyzing trace with hash -29084514, now seen corresponding path program 1 times [2021-10-13 19:12:26,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:26,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178185564] [2021-10-13 19:12:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:26,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:26,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:26,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568006765] [2021-10-13 19:12:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:26,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:26,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:26,545 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:26,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 19:12:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:12:27,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:12:27,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 19:12:27,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:27,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178185564] [2021-10-13 19:12:27,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:27,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568006765] [2021-10-13 19:12:27,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568006765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:27,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:27,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 19:12:27,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843931497] [2021-10-13 19:12:27,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:12:27,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:12:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:12:27,197 INFO L87 Difference]: Start difference. First operand 2108 states and 5393 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 19:12:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:27,235 INFO L93 Difference]: Finished difference Result 2442 states and 6256 transitions. [2021-10-13 19:12:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:12:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 34 [2021-10-13 19:12:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:27,240 INFO L225 Difference]: With dead ends: 2442 [2021-10-13 19:12:27,240 INFO L226 Difference]: Without dead ends: 2442 [2021-10-13 19:12:27,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:12:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-10-13 19:12:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2438. [2021-10-13 19:12:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2436 states have (on average 2.564039408866995) internal successors, (6246), 2437 states have internal predecessors, (6246), 0 states have call successors, (0), 0 states 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 19:12:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 6246 transitions. [2021-10-13 19:12:27,286 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 6246 transitions. Word has length 34 [2021-10-13 19:12:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:27,288 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 6246 transitions. [2021-10-13 19:12:27,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 19:12:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 6246 transitions. [2021-10-13 19:12:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 19:12:27,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:27,293 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:27,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:27,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 19:12:27,508 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1853733575, now seen corresponding path program 2 times [2021-10-13 19:12:27,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:27,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422002494] [2021-10-13 19:12:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:27,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:27,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:27,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203382526] [2021-10-13 19:12:27,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:12:27,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:27,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:27,547 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:27,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 19:12:28,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:12:28,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:12:28,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:12:28,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:29,774 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:31,948 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 6 not checked. [2021-10-13 19:12:31,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:31,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422002494] [2021-10-13 19:12:31,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:31,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203382526] [2021-10-13 19:12:31,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203382526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:31,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:31,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:31,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950767523] [2021-10-13 19:12:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:31,971 INFO L87 Difference]: Start difference. First operand 2438 states and 6246 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:33,976 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:33,984 INFO L93 Difference]: Finished difference Result 2462 states and 6305 transitions. [2021-10-13 19:12:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:12:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 19:12:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:33,988 INFO L225 Difference]: With dead ends: 2462 [2021-10-13 19:12:33,988 INFO L226 Difference]: Without dead ends: 2462 [2021-10-13 19:12:33,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5444.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-10-13 19:12:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2439. [2021-10-13 19:12:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2437 states have (on average 2.563807960607304) internal successors, (6248), 2438 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states 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 19:12:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 6248 transitions. [2021-10-13 19:12:34,041 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 6248 transitions. Word has length 36 [2021-10-13 19:12:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:34,041 INFO L470 AbstractCegarLoop]: Abstraction has 2439 states and 6248 transitions. [2021-10-13 19:12:34,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 6248 transitions. [2021-10-13 19:12:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 19:12:34,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:34,045 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:34,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:12:34,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:34,247 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:34,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:34,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1857740945, now seen corresponding path program 3 times [2021-10-13 19:12:34,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:34,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444288272] [2021-10-13 19:12:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:34,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:34,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:34,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778439127] [2021-10-13 19:12:34,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:12:34,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:34,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:34,260 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:34,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 19:12:34,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:12:34,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:12:34,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:12:34,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:12:36,791 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:39,141 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:12:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 6 not checked. [2021-10-13 19:12:39,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:12:39,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444288272] [2021-10-13 19:12:39,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:12:39,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778439127] [2021-10-13 19:12:39,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778439127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:12:39,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:12:39,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:12:39,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022884418] [2021-10-13 19:12:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:12:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:12:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:12:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:12:39,185 INFO L87 Difference]: Start difference. First operand 2439 states and 6248 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:41,192 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:12:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:12:41,200 INFO L93 Difference]: Finished difference Result 2463 states and 6307 transitions. [2021-10-13 19:12:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:12:41,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 19:12:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:12:41,204 INFO L225 Difference]: With dead ends: 2463 [2021-10-13 19:12:41,204 INFO L226 Difference]: Without dead ends: 2463 [2021-10-13 19:12:41,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5937.0ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:12:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-10-13 19:12:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2440. [2021-10-13 19:12:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 2.5639868744872847) internal successors, (6251), 2439 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states 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 19:12:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 6251 transitions. [2021-10-13 19:12:41,239 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 6251 transitions. Word has length 36 [2021-10-13 19:12:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:12:41,240 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 6251 transitions. [2021-10-13 19:12:41,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:12:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 6251 transitions. [2021-10-13 19:12:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 19:12:41,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:12:41,243 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:12:41,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-13 19:12:41,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:41,444 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:12:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:12:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1857741751, now seen corresponding path program 5 times [2021-10-13 19:12:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:12:41,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18938145] [2021-10-13 19:12:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:12:41,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:12:41,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:12:41,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974340814] [2021-10-13 19:12:41,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:12:41,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:12:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:12:41,455 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:12:41,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 19:21:12,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 19:21:12,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:21:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:21:12,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:21:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 19:21:13,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:21:13,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18938145] [2021-10-13 19:21:13,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:21:13,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974340814] [2021-10-13 19:21:13,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974340814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:21:13,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:21:13,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 19:21:13,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88152508] [2021-10-13 19:21:13,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:21:13,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:21:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:21:13,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:21:13,013 INFO L87 Difference]: Start difference. First operand 2440 states and 6251 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:21:13,065 INFO L93 Difference]: Finished difference Result 2776 states and 7119 transitions. [2021-10-13 19:21:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:21:13,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 19:21:13,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:21:13,070 INFO L225 Difference]: With dead ends: 2776 [2021-10-13 19:21:13,071 INFO L226 Difference]: Without dead ends: 2776 [2021-10-13 19:21:13,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:21:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-10-13 19:21:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2770. [2021-10-13 19:21:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2768 states have (on average 2.566473988439306) internal successors, (7104), 2769 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states 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 19:21:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 7104 transitions. [2021-10-13 19:21:13,109 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 7104 transitions. Word has length 36 [2021-10-13 19:21:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:21:13,109 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 7104 transitions. [2021-10-13 19:21:13,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 7104 transitions. [2021-10-13 19:21:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 19:21:13,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:21:13,113 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:21:13,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:21:13,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-13 19:21:13,313 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:21:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:21:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1296134692, now seen corresponding path program 6 times [2021-10-13 19:21:13,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:21:13,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864780499] [2021-10-13 19:21:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:21:13,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:21:13,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:21:13,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910227720] [2021-10-13 19:21:13,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:21:13,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:13,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:21:13,351 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:21:13,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 19:21:13,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 19:21:13,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:21:13,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:21:13,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:21:15,713 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:17,989 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 7 not checked. [2021-10-13 19:21:18,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:21:18,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864780499] [2021-10-13 19:21:18,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:21:18,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910227720] [2021-10-13 19:21:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910227720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:21:18,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:21:18,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:21:18,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374572723] [2021-10-13 19:21:18,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:21:18,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:21:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:21:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:21:18,016 INFO L87 Difference]: Start difference. First operand 2770 states and 7104 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:20,033 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:21:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:21:20,045 INFO L93 Difference]: Finished difference Result 2805 states and 7186 transitions. [2021-10-13 19:21:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:21:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 19:21:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:21:20,051 INFO L225 Difference]: With dead ends: 2805 [2021-10-13 19:21:20,051 INFO L226 Difference]: Without dead ends: 2805 [2021-10-13 19:21:20,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5621.2ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:21:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2021-10-13 19:21:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2769. [2021-10-13 19:21:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2767 states have (on average 2.5663173111673294) internal successors, (7101), 2768 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states 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 19:21:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 7101 transitions. [2021-10-13 19:21:20,105 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 7101 transitions. Word has length 38 [2021-10-13 19:21:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:21:20,106 INFO L470 AbstractCegarLoop]: Abstraction has 2769 states and 7101 transitions. [2021-10-13 19:21:20,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 7101 transitions. [2021-10-13 19:21:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 19:21:20,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:21:20,109 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:21:20,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 19:21:20,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 19:21:20,311 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:21:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:21:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash 976294548, now seen corresponding path program 4 times [2021-10-13 19:21:20,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:21:20,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906935994] [2021-10-13 19:21:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:21:20,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:21:20,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:21:20,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439239241] [2021-10-13 19:21:20,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:21:20,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:20,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:21:20,327 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:21:20,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 19:21:20,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:21:20,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:21:20,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:21:20,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:21:22,933 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:25,225 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 7 not checked. [2021-10-13 19:21:25,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:21:25,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906935994] [2021-10-13 19:21:25,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:21:25,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439239241] [2021-10-13 19:21:25,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439239241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:21:25,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:21:25,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:21:25,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830153716] [2021-10-13 19:21:25,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:21:25,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:21:25,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:21:25,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:21:25,228 INFO L87 Difference]: Start difference. First operand 2769 states and 7101 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:27,239 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:21:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:21:27,248 INFO L93 Difference]: Finished difference Result 2828 states and 7224 transitions. [2021-10-13 19:21:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:21:27,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 19:21:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:21:27,253 INFO L225 Difference]: With dead ends: 2828 [2021-10-13 19:21:27,253 INFO L226 Difference]: Without dead ends: 2828 [2021-10-13 19:21:27,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5831.2ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:21:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-10-13 19:21:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2784. [2021-10-13 19:21:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 2.5636232925952553) internal successors, (7132), 2783 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states 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 19:21:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 7132 transitions. [2021-10-13 19:21:27,298 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 7132 transitions. Word has length 38 [2021-10-13 19:21:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:21:27,299 INFO L470 AbstractCegarLoop]: Abstraction has 2784 states and 7132 transitions. [2021-10-13 19:21:27,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 7132 transitions. [2021-10-13 19:21:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 19:21:27,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:21:27,314 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:21:27,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-13 19:21:27,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-13 19:21:27,528 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:21:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:21:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash -147007550, now seen corresponding path program 7 times [2021-10-13 19:21:27,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:21:27,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794641398] [2021-10-13 19:21:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:21:27,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:21:27,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:21:27,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702001683] [2021-10-13 19:21:27,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:21:27,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:21:27,542 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:21:27,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 19:21:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:21:28,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 19:21:28,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:21:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 55 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-13 19:21:28,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:21:28,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794641398] [2021-10-13 19:21:28,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:21:28,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702001683] [2021-10-13 19:21:28,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702001683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:21:28,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:21:28,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-13 19:21:28,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130042131] [2021-10-13 19:21:28,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:21:28,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:21:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:21:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:21:28,506 INFO L87 Difference]: Start difference. First operand 2784 states and 7132 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:21:28,943 INFO L93 Difference]: Finished difference Result 5171 states and 12973 transitions. [2021-10-13 19:21:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:21:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 19:21:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:21:28,948 INFO L225 Difference]: With dead ends: 5171 [2021-10-13 19:21:28,948 INFO L226 Difference]: Without dead ends: 2786 [2021-10-13 19:21:28,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 396.6ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:21:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-10-13 19:21:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2021-10-13 19:21:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2784 states have (on average 2.5625) internal successors, (7134), 2785 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states 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 19:21:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 7134 transitions. [2021-10-13 19:21:28,985 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 7134 transitions. Word has length 38 [2021-10-13 19:21:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:21:28,985 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 7134 transitions. [2021-10-13 19:21:28,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 7134 transitions. [2021-10-13 19:21:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 19:21:28,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:21:28,989 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:21:29,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 19:21:29,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:29,193 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:21:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:21:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash 554622387, now seen corresponding path program 8 times [2021-10-13 19:21:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:21:29,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695157737] [2021-10-13 19:21:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:21:29,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:21:29,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:21:29,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444341078] [2021-10-13 19:21:29,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:21:29,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:29,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:21:29,233 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:21:29,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 19:21:29,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:21:29,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:21:29,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:21:29,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:21:31,660 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:34,012 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-13 19:21:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 7 not checked. [2021-10-13 19:21:34,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:21:34,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695157737] [2021-10-13 19:21:34,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 19:21:34,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444341078] [2021-10-13 19:21:34,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444341078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:21:34,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:21:34,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-13 19:21:34,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903956536] [2021-10-13 19:21:34,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:21:34,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:21:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:21:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-13 19:21:34,056 INFO L87 Difference]: Start difference. First operand 2786 states and 7134 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:36,063 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-13 19:21:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:21:36,075 INFO L93 Difference]: Finished difference Result 2825 states and 7228 transitions. [2021-10-13 19:21:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:21:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 19:21:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:21:36,082 INFO L225 Difference]: With dead ends: 2825 [2021-10-13 19:21:36,082 INFO L226 Difference]: Without dead ends: 2825 [2021-10-13 19:21:36,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5715.2ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-13 19:21:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-10-13 19:21:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2789. [2021-10-13 19:21:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2787 states have (on average 2.5626121277359166) internal successors, (7142), 2788 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states 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 19:21:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 7142 transitions. [2021-10-13 19:21:36,155 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 7142 transitions. Word has length 40 [2021-10-13 19:21:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:21:36,155 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 7142 transitions. [2021-10-13 19:21:36,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:21:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 7142 transitions. [2021-10-13 19:21:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 19:21:36,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:21:36,161 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:21:36,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-13 19:21:36,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:36,377 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 19:21:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:21:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash 554403713, now seen corresponding path program 5 times [2021-10-13 19:21:36,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:21:36,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058515044] [2021-10-13 19:21:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:21:36,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:21:36,386 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 19:21:36,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831389071] [2021-10-13 19:21:36,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:21:36,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:21:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:21:36,387 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:21:36,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 19:23:18,028 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:23:18,028 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:23:19,229 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forcibly destroying the process [2021-10-13 19:23:19,230 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 19:23:19,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-13 19:23:19,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 137 [2021-10-13 19:23:19,254 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-10-13 19:23:19,254 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,256 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,257 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,259 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:23:19,265 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 137 [2021-10-13 19:23:19,271 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:23:19,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:23:19,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:23:19 BasicIcfg [2021-10-13 19:23:19,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:23:19,273 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-13 19:23:19,275 INFO L168 Benchmark]: Toolchain (without parser) took 868020.37 ms. Allocated memory was 162.5 MB in the beginning and 215.0 MB in the end (delta: 52.4 MB). Free memory was 137.4 MB in the beginning and 91.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 99.2 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,275 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory was 133.3 MB in the beginning and 133.2 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:23:19,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.36 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 126.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.95 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 123.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,276 INFO L168 Benchmark]: Boogie Preprocessor took 62.79 ms. Allocated memory is still 162.5 MB. Free memory was 123.8 MB in the beginning and 121.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,277 INFO L168 Benchmark]: RCFGBuilder took 813.61 ms. Allocated memory is still 162.5 MB. Free memory was 121.9 MB in the beginning and 135.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,277 INFO L168 Benchmark]: TraceAbstraction took 866785.72 ms. Allocated memory was 162.5 MB in the beginning and 215.0 MB in the end (delta: 52.4 MB). Free memory was 135.2 MB in the beginning and 91.5 MB in the end (delta: 43.7 MB). Peak memory consumption was 96.9 MB. Max. memory is 8.0 GB. [2021-10-13 19:23:19,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory was 133.3 MB in the beginning and 133.2 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.36 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 126.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.95 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 123.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.79 ms. Allocated memory is still 162.5 MB. Free memory was 123.8 MB in the beginning and 121.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 813.61 ms. Allocated memory is still 162.5 MB. Free memory was 121.9 MB in the beginning and 135.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 866785.72 ms. Allocated memory was 162.5 MB in the beginning and 215.0 MB in the end (delta: 52.4 MB). Free memory was 135.2 MB in the beginning and 91.5 MB in the end (delta: 43.7 MB). Peak memory consumption was 96.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36140.5ms, 281 PlacesBefore, 56 PlacesAfterwards, 301 TransitionsBefore, 56 TransitionsAfterwards, 1916 CoEnabledTransitionPairs, 7 FixpointIterations, 225 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 56 TrivialYvCompositions, 6 ConcurrentYvCompositions, 20 ChoiceCompositions, 364 TotalNumberOfCompositions, 3591 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2324, positive: 2205, positive conditional: 0, positive unconditional: 2205, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1312, positive: 1278, positive conditional: 0, positive unconditional: 1278, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1312, positive: 1278, positive conditional: 0, positive unconditional: 1278, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9305, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 231, negative conditional: 0, negative unconditional: 231, unknown: 9074, unknown conditional: 0, unknown unconditional: 9074] ], Cache Queries: [ total: 2324, positive: 927, positive conditional: 0, positive unconditional: 927, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 1312, unknown conditional: 0, unknown unconditional: 1312] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 41 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 326 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 866619.0ms, OverallIterations: 73, TraceHistogramMax: 8, EmptinessCheckTime: 170.9ms, AutomataDifference: 56630.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36228.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2940 SDtfs, 3317 SDslu, 4428 SDs, 0 SdLazy, 1684 SolverSat, 315 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5075.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1439 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 71 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 137509.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3315occurred in iteration=41, InterpolantAutomatonStates: 441, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2883.7ms AutomataMinimizationTime, 72 MinimizatonAttempts, 13704 StatesRemovedByMinimization, 63 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 910.3ms SsaConstructionTime, 535869.1ms SatisfiabilityAnalysisTime, 100371.2ms InterpolantComputationTime, 1395 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 1323 ConstructedInterpolants, 654 QuantifiedInterpolants, 10115 SizeOfPredicates, 145 NumberOfNonLiveVariables, 14056 ConjunctsInSsa, 422 ConjunctsInUnsatCore, 72 InterpolantComputations, 21 PerfectInterpolantSequences, 1565/1856 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown