/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:50:13,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:50:13,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:50:13,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:50:13,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:50:13,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:50:13,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:50:13,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:50:13,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:50:13,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:50:13,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:50:13,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:50:13,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:50:13,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:50:13,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:50:13,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:50:13,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:50:13,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:50:13,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:50:13,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:50:13,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:50:13,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:50:13,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:50:13,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:50:13,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:50:13,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:50:13,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:50:13,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:50:13,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:50:13,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:50:13,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:50:13,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:50:13,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:50:13,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:50:13,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:50:13,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:50:13,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:50:13,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:50:13,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:50:13,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:50:13,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:50:13,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:50:13,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:50:13,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:50:13,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:50:13,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:50:13,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:50:13,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:50:13,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:50:13,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:50:13,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:50:13,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:50:13,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:50:13,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:50:13,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:50:13,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:50:13,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:50:13,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:50:13,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:50:13,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:50:13,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:50:13,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:50:13,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:50:13,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:50:13,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:50:13,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:50:13,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:50:13,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:50:13,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:50:13,819 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:50:13,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:50:13,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:50:13,819 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:50:14,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:50:14,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:50:14,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:50:14,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:50:14,297 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:50:14,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-18 02:50:14,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87808d18e/d89e0ee823b845be9036b59646fedbe8/FLAG2039a5f49 [2020-09-18 02:50:15,094 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:50:15,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-18 02:50:15,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87808d18e/d89e0ee823b845be9036b59646fedbe8/FLAG2039a5f49 [2020-09-18 02:50:15,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87808d18e/d89e0ee823b845be9036b59646fedbe8 [2020-09-18 02:50:15,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:50:15,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:50:15,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:50:15,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:50:15,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:50:15,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:50:15" (1/1) ... [2020-09-18 02:50:15,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225002a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:15, skipping insertion in model container [2020-09-18 02:50:15,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:50:15" (1/1) ... [2020-09-18 02:50:15,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:50:15,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:50:16,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:50:16,221 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:50:16,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:50:16,508 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:50:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16 WrapperNode [2020-09-18 02:50:16,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:50:16,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:50:16,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:50:16,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:50:16,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:50:16,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:50:16,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:50:16,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:50:16,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... [2020-09-18 02:50:16,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:50:16,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:50:16,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:50:16,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:50:16,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:50:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:50:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:50:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-18 02:50:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-09-18 02:50:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-09-18 02:50:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:50:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:50:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:50:16,749 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:50:17,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:50:17,253 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:50:17,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:50:17 BoogieIcfgContainer [2020-09-18 02:50:17,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:50:17,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:50:17,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:50:17,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:50:17,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:50:15" (1/3) ... [2020-09-18 02:50:17,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aac7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:50:17, skipping insertion in model container [2020-09-18 02:50:17,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:50:16" (2/3) ... [2020-09-18 02:50:17,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aac7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:50:17, skipping insertion in model container [2020-09-18 02:50:17,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:50:17" (3/3) ... [2020-09-18 02:50:17,270 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-09-18 02:50:17,282 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:50:17,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:50:17,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:50:17,293 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:50:17,320 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,320 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,320 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,320 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,321 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,321 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,321 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,322 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,322 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,322 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,322 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,323 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,323 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,323 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,324 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,324 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,324 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,324 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,324 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,325 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,325 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,330 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,330 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,330 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,331 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,331 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,331 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,331 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,331 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:50:17,367 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:50:17,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:50:17,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:50:17,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:50:17,393 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:50:17,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:50:17,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:50:17,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:50:17,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:50:17,417 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-09-18 02:50:17,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-18 02:50:17,489 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-18 02:50:17,489 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-18 02:50:17,496 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-18 02:50:17,499 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-18 02:50:17,526 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-18 02:50:17,526 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-18 02:50:17,527 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-18 02:50:17,529 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2020-09-18 02:50:17,532 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:50:19,024 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-18 02:50:19,253 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-18 02:50:19,905 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-18 02:50:20,267 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-18 02:50:20,862 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-18 02:50:21,338 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-18 02:50:22,895 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-09-18 02:50:23,599 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-09-18 02:50:23,602 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2020-09-18 02:50:23,603 INFO L214 etLargeBlockEncoding]: Total number of compositions: 78 [2020-09-18 02:50:23,608 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-09-18 02:50:23,620 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-09-18 02:50:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-18 02:50:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:50:23,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:23,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:23,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-09-18 02:50:23,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:23,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376326461] [2020-09-18 02:50:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:50:23,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376326461] [2020-09-18 02:50:23,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:50:23,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:50:24,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [27381951] [2020-09-18 02:50:24,002 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:24,010 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:24,035 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-09-18 02:50:24,035 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:24,089 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [122#(< ULTIMATE.start_main_~i~1 20)] [2020-09-18 02:50:24,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:50:24,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:50:24,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:50:24,114 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-09-18 02:50:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:24,159 INFO L93 Difference]: Finished difference Result 24 states and 44 transitions. [2020-09-18 02:50:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:50:24,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-18 02:50:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:24,177 INFO L225 Difference]: With dead ends: 24 [2020-09-18 02:50:24,177 INFO L226 Difference]: Without dead ends: 24 [2020-09-18 02:50:24,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:50:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-18 02:50:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-18 02:50:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-18 02:50:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-09-18 02:50:24,231 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 8 [2020-09-18 02:50:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:24,231 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-09-18 02:50:24,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:50:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-09-18 02:50:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:50:24,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:24,233 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:24,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:50:24,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:24,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1357612780, now seen corresponding path program 1 times [2020-09-18 02:50:24,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:24,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471227374] [2020-09-18 02:50:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:50:24,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471227374] [2020-09-18 02:50:24,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384156644] [2020-09-18 02:50:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:24,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 02:50:24,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:24,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 02:50:24,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-09-18 02:50:24,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1542380160] [2020-09-18 02:50:24,546 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:24,548 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:24,552 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-09-18 02:50:24,553 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:24,585 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:50:24,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:50:24,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:24,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:50:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:50:24,587 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 3 states. [2020-09-18 02:50:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:24,623 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2020-09-18 02:50:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:50:24,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 02:50:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:24,625 INFO L225 Difference]: With dead ends: 34 [2020-09-18 02:50:24,626 INFO L226 Difference]: Without dead ends: 34 [2020-09-18 02:50:24,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:50:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-18 02:50:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-09-18 02:50:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-18 02:50:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 54 transitions. [2020-09-18 02:50:24,634 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 54 transitions. Word has length 10 [2020-09-18 02:50:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:24,635 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 54 transitions. [2020-09-18 02:50:24,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:50:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 54 transitions. [2020-09-18 02:50:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:50:24,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:24,636 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:24,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-18 02:50:24,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash -608119097, now seen corresponding path program 1 times [2020-09-18 02:50:24,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:24,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087906643] [2020-09-18 02:50:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:24,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087906643] [2020-09-18 02:50:24,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46246098] [2020-09-18 02:50:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:25,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-18 02:50:25,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:25,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:25,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-18 02:50:25,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [191685702] [2020-09-18 02:50:25,103 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:25,107 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:25,115 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-18 02:50:25,115 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:25,210 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [358#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 333#(<= thread_function_dataraceThread1of1ForFork0_~i~0 0)] [2020-09-18 02:50:25,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:50:25,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:25,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:50:25,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:50:25,213 INFO L87 Difference]: Start difference. First operand 29 states and 54 transitions. Second operand 6 states. [2020-09-18 02:50:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:25,238 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-09-18 02:50:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:50:25,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:50:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:25,240 INFO L225 Difference]: With dead ends: 44 [2020-09-18 02:50:25,240 INFO L226 Difference]: Without dead ends: 44 [2020-09-18 02:50:25,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:50:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-18 02:50:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-09-18 02:50:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-18 02:50:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-09-18 02:50:25,251 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 12 [2020-09-18 02:50:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:25,252 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-09-18 02:50:25,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:50:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-09-18 02:50:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:50:25,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:25,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:25,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:25,469 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-09-18 02:50:25,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:25,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701301743] [2020-09-18 02:50:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:25,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701301743] [2020-09-18 02:50:25,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925530155] [2020-09-18 02:50:25,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:25,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-18 02:50:25,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:25,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:50:25,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:25,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:25,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-09-18 02:50:25,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [8685090] [2020-09-18 02:50:25,729 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:25,731 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:25,734 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-09-18 02:50:25,734 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:25,820 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [526#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 527#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:50:25,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-18 02:50:25,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-18 02:50:25,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:50:25,821 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 8 states. [2020-09-18 02:50:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:25,876 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-09-18 02:50:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:50:25,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-09-18 02:50:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:25,877 INFO L225 Difference]: With dead ends: 54 [2020-09-18 02:50:25,878 INFO L226 Difference]: Without dead ends: 54 [2020-09-18 02:50:25,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-18 02:50:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-18 02:50:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-09-18 02:50:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-18 02:50:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-09-18 02:50:25,886 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-09-18 02:50:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:25,887 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-09-18 02:50:25,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-18 02:50:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-09-18 02:50:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 02:50:25,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:25,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:26,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:26,103 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:26,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-09-18 02:50:26,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:26,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643075156] [2020-09-18 02:50:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-18 02:50:26,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643075156] [2020-09-18 02:50:26,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472798861] [2020-09-18 02:50:26,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:26,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-18 02:50:26,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:26,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:50:26,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-18 02:50:26,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:26,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-09-18 02:50:26,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1204721121] [2020-09-18 02:50:26,337 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:26,339 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:26,343 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-09-18 02:50:26,344 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:26,559 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [737#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 738#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 739#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 740#(< ULTIMATE.start_main_~i~1 20), 741#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 742#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18))] [2020-09-18 02:50:26,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-18 02:50:26,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:26,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-18 02:50:26,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-18 02:50:26,561 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 15 states. [2020-09-18 02:50:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:28,278 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2020-09-18 02:50:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-18 02:50:28,279 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-09-18 02:50:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:28,281 INFO L225 Difference]: With dead ends: 112 [2020-09-18 02:50:28,281 INFO L226 Difference]: Without dead ends: 112 [2020-09-18 02:50:28,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-09-18 02:50:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-18 02:50:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2020-09-18 02:50:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-18 02:50:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2020-09-18 02:50:28,295 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 16 [2020-09-18 02:50:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:28,295 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2020-09-18 02:50:28,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-18 02:50:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2020-09-18 02:50:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-18 02:50:28,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:28,298 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:28,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:28,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash -797549408, now seen corresponding path program 4 times [2020-09-18 02:50:28,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:28,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69708847] [2020-09-18 02:50:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-18 02:50:28,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69708847] [2020-09-18 02:50:28,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295941969] [2020-09-18 02:50:28,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:28,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-18 02:50:28,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:28,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-18 02:50:28,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-18 02:50:28,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:28,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-09-18 02:50:28,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [410685260] [2020-09-18 02:50:28,805 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:28,808 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:28,816 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-09-18 02:50:28,816 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:29,028 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1244#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1245#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1246#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 1247#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:50:29,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-18 02:50:29,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-18 02:50:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-09-18 02:50:29,030 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand 12 states. [2020-09-18 02:50:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:29,125 INFO L93 Difference]: Finished difference Result 130 states and 256 transitions. [2020-09-18 02:50:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-18 02:50:29,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-09-18 02:50:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:29,127 INFO L225 Difference]: With dead ends: 130 [2020-09-18 02:50:29,127 INFO L226 Difference]: Without dead ends: 130 [2020-09-18 02:50:29,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-09-18 02:50:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-18 02:50:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2020-09-18 02:50:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-18 02:50:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 238 transitions. [2020-09-18 02:50:29,142 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 238 transitions. Word has length 22 [2020-09-18 02:50:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:29,142 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 238 transitions. [2020-09-18 02:50:29,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-18 02:50:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 238 transitions. [2020-09-18 02:50:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-18 02:50:29,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:29,145 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:29,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-18 02:50:29,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:29,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1172519469, now seen corresponding path program 5 times [2020-09-18 02:50:29,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:29,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177251214] [2020-09-18 02:50:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-18 02:50:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177251214] [2020-09-18 02:50:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258526400] [2020-09-18 02:50:29,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:29,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-09-18 02:50:29,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:29,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-18 02:50:29,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-18 02:50:29,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:29,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-09-18 02:50:29,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1984154499] [2020-09-18 02:50:29,660 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:29,664 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:29,672 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 62 transitions. [2020-09-18 02:50:29,673 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:30,177 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [1712#(< ULTIMATE.start_main_~i~1 20), 1713#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 1714#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 1715#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 1716#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1)), 1717#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 1718#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 1707#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1708#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1709#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 1710#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 1711#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:50:30,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-18 02:50:30,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-18 02:50:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-09-18 02:50:30,179 INFO L87 Difference]: Start difference. First operand 121 states and 238 transitions. Second operand 27 states. [2020-09-18 02:50:37,896 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-09-18 02:50:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:37,899 INFO L93 Difference]: Finished difference Result 276 states and 548 transitions. [2020-09-18 02:50:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-18 02:50:37,899 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 24 [2020-09-18 02:50:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:37,902 INFO L225 Difference]: With dead ends: 276 [2020-09-18 02:50:37,902 INFO L226 Difference]: Without dead ends: 276 [2020-09-18 02:50:37,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6533 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=4924, Invalid=14536, Unknown=0, NotChecked=0, Total=19460 [2020-09-18 02:50:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-18 02:50:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2020-09-18 02:50:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-18 02:50:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 514 transitions. [2020-09-18 02:50:37,930 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 514 transitions. Word has length 24 [2020-09-18 02:50:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:37,930 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 514 transitions. [2020-09-18 02:50:37,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-18 02:50:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 514 transitions. [2020-09-18 02:50:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-18 02:50:37,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:37,934 INFO L422 BasicCegarLoop]: trace histogram [14, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:38,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:38,148 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 514042566, now seen corresponding path program 6 times [2020-09-18 02:50:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:38,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34621327] [2020-09-18 02:50:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-18 02:50:38,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34621327] [2020-09-18 02:50:38,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261343859] [2020-09-18 02:50:38,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:38,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-09-18 02:50:38,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:38,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-18 02:50:38,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-18 02:50:38,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:38,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2020-09-18 02:50:38,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [339179010] [2020-09-18 02:50:38,767 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:38,776 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:38,790 INFO L274 McrAutomatonBuilder]: Finished intersection with 64 states and 92 transitions. [2020-09-18 02:50:38,791 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:40,103 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 21 new interpolants: [2976#(or (< ULTIMATE.start_main_~i~1 12) (<= 13 ULTIMATE.start_main_~i~1)), 2977#(or (<= 12 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 11)), 2978#(or (< ULTIMATE.start_main_~i~1 10) (<= 11 ULTIMATE.start_main_~i~1)), 2979#(or (< ULTIMATE.start_main_~i~1 9) (<= 10 ULTIMATE.start_main_~i~1)), 2980#(or (< ULTIMATE.start_main_~i~1 8) (<= 9 ULTIMATE.start_main_~i~1)), 2981#(or (< ULTIMATE.start_main_~i~1 7) (<= 8 ULTIMATE.start_main_~i~1)), 2982#(or (<= 7 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 6)), 2983#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 2984#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 2985#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 2986#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 2987#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 2988#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 2968#(< ULTIMATE.start_main_~i~1 20), 2969#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 2970#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 2971#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 2972#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1)), 2973#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 2974#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 2975#(or (<= 14 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 13))] [2020-09-18 02:50:40,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-18 02:50:40,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-18 02:50:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2020-09-18 02:50:40,105 INFO L87 Difference]: Start difference. First operand 259 states and 514 transitions. Second operand 45 states. [2020-09-18 02:50:55,497 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-09-18 02:50:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:55,500 INFO L93 Difference]: Finished difference Result 418 states and 832 transitions. [2020-09-18 02:50:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2020-09-18 02:50:55,501 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 34 [2020-09-18 02:50:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:55,503 INFO L225 Difference]: With dead ends: 418 [2020-09-18 02:50:55,504 INFO L226 Difference]: Without dead ends: 418 [2020-09-18 02:50:55,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15851 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=11656, Invalid=36086, Unknown=0, NotChecked=0, Total=47742 [2020-09-18 02:50:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-18 02:50:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 395. [2020-09-18 02:50:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-18 02:50:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 786 transitions. [2020-09-18 02:50:55,546 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 786 transitions. Word has length 34 [2020-09-18 02:50:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:55,547 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 786 transitions. [2020-09-18 02:50:55,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-18 02:50:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 786 transitions. [2020-09-18 02:50:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-18 02:50:55,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:55,552 INFO L422 BasicCegarLoop]: trace histogram [20, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:55,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:55,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1980377447, now seen corresponding path program 7 times [2020-09-18 02:50:55,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:55,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957587885] [2020-09-18 02:50:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:55,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957587885] [2020-09-18 02:50:55,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871217132] [2020-09-18 02:50:55,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:56,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-18 02:50:56,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:56,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:56,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-09-18 02:50:56,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574853974] [2020-09-18 02:50:56,128 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:56,146 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:56,170 INFO L274 McrAutomatonBuilder]: Finished intersection with 80 states and 116 transitions. [2020-09-18 02:50:56,171 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:56,657 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [4848#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 3)), 4849#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 4850#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 4851#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 4845#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 4846#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 4847#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4))] [2020-09-18 02:50:56,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-18 02:50:56,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:56,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-18 02:50:56,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-18 02:50:56,659 INFO L87 Difference]: Start difference. First operand 395 states and 786 transitions. Second operand 18 states. [2020-09-18 02:50:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:56,800 INFO L93 Difference]: Finished difference Result 464 states and 924 transitions. [2020-09-18 02:50:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-18 02:50:56,801 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-09-18 02:50:56,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:56,804 INFO L225 Difference]: With dead ends: 464 [2020-09-18 02:50:56,804 INFO L226 Difference]: Without dead ends: 464 [2020-09-18 02:50:56,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-09-18 02:50:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-18 02:50:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 441. [2020-09-18 02:50:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-18 02:50:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 878 transitions. [2020-09-18 02:50:56,817 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 878 transitions. Word has length 42 [2020-09-18 02:50:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:56,817 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 878 transitions. [2020-09-18 02:50:56,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-18 02:50:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 878 transitions. [2020-09-18 02:50:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-18 02:50:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:56,820 INFO L422 BasicCegarLoop]: trace histogram [20, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:57,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-09-18 02:50:57,036 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:57,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1673963596, now seen corresponding path program 8 times [2020-09-18 02:50:57,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:57,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622317749] [2020-09-18 02:50:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:57,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622317749] [2020-09-18 02:50:57,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479311610] [2020-09-18 02:50:57,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:57,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-18 02:50:57,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:57,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-18 02:50:57,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:57,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:57,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-09-18 02:50:57,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [935546420] [2020-09-18 02:50:57,383 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:57,392 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:57,417 INFO L274 McrAutomatonBuilder]: Finished intersection with 84 states and 122 transitions. [2020-09-18 02:50:57,417 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:57,993 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [6342#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 6343#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 6344#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 6345#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 6346#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 6347#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 6348#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 6349#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:50:57,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-18 02:50:57,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:57,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-18 02:50:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-09-18 02:50:57,995 INFO L87 Difference]: Start difference. First operand 441 states and 878 transitions. Second operand 20 states. [2020-09-18 02:50:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:58,122 INFO L93 Difference]: Finished difference Result 510 states and 1016 transitions. [2020-09-18 02:50:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-18 02:50:58,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-09-18 02:50:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:58,128 INFO L225 Difference]: With dead ends: 510 [2020-09-18 02:50:58,128 INFO L226 Difference]: Without dead ends: 510 [2020-09-18 02:50:58,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 14 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-09-18 02:50:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-09-18 02:50:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 487. [2020-09-18 02:50:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-09-18 02:50:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 970 transitions. [2020-09-18 02:50:58,141 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 970 transitions. Word has length 44 [2020-09-18 02:50:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:58,142 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 970 transitions. [2020-09-18 02:50:58,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-18 02:50:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 970 transitions. [2020-09-18 02:50:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-18 02:50:58,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:58,148 INFO L422 BasicCegarLoop]: trace histogram [20, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:58,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:58,364 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 212457791, now seen corresponding path program 9 times [2020-09-18 02:50:58,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:58,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936333243] [2020-09-18 02:50:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:50:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:58,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936333243] [2020-09-18 02:50:58,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626845232] [2020-09-18 02:50:58,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:58,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-09-18 02:50:58,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:50:58,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-18 02:50:58,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:50:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:50:58,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:50:58,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-09-18 02:50:58,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1901076276] [2020-09-18 02:50:58,774 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:50:58,781 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:50:58,806 INFO L274 McrAutomatonBuilder]: Finished intersection with 88 states and 128 transitions. [2020-09-18 02:50:58,807 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:50:59,529 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [7985#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 7986#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 7987#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 7988#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 5)), 7989#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 7990#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 7991#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 7992#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 7993#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:50:59,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-18 02:50:59,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:50:59,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-18 02:50:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-09-18 02:50:59,530 INFO L87 Difference]: Start difference. First operand 487 states and 970 transitions. Second operand 22 states. [2020-09-18 02:50:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:50:59,684 INFO L93 Difference]: Finished difference Result 556 states and 1108 transitions. [2020-09-18 02:50:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-18 02:50:59,684 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-09-18 02:50:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:50:59,689 INFO L225 Difference]: With dead ends: 556 [2020-09-18 02:50:59,689 INFO L226 Difference]: Without dead ends: 556 [2020-09-18 02:50:59,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 104 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-09-18 02:50:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-09-18 02:50:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 533. [2020-09-18 02:50:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-18 02:50:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1062 transitions. [2020-09-18 02:50:59,704 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1062 transitions. Word has length 46 [2020-09-18 02:50:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:50:59,705 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 1062 transitions. [2020-09-18 02:50:59,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-18 02:50:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1062 transitions. [2020-09-18 02:50:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-18 02:50:59,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:50:59,709 INFO L422 BasicCegarLoop]: trace histogram [20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:50:59,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:50:59,923 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:50:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:50:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash 159684978, now seen corresponding path program 10 times [2020-09-18 02:50:59,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:50:59,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897205228] [2020-09-18 02:50:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:50:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:51:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:51:00,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897205228] [2020-09-18 02:51:00,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842525555] [2020-09-18 02:51:00,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:51:00,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-18 02:51:00,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:51:00,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-18 02:51:00,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:51:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:51:00,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:51:00,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-09-18 02:51:00,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1324326810] [2020-09-18 02:51:00,310 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:51:00,320 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:51:00,351 INFO L274 McrAutomatonBuilder]: Finished intersection with 92 states and 134 transitions. [2020-09-18 02:51:00,351 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:51:01,100 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [9776#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 9777#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 9778#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 9779#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 9780#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 9781#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 9782#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0)), 9783#(or (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 0)), 9774#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 9775#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-18 02:51:01,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-18 02:51:01,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:51:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-18 02:51:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-09-18 02:51:01,101 INFO L87 Difference]: Start difference. First operand 533 states and 1062 transitions. Second operand 24 states. [2020-09-18 02:51:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:51:01,268 INFO L93 Difference]: Finished difference Result 602 states and 1200 transitions. [2020-09-18 02:51:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-18 02:51:01,268 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-09-18 02:51:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:51:01,272 INFO L225 Difference]: With dead ends: 602 [2020-09-18 02:51:01,273 INFO L226 Difference]: Without dead ends: 602 [2020-09-18 02:51:01,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 107 SyntacticMatches, 18 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-18 02:51:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-18 02:51:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 579. [2020-09-18 02:51:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-18 02:51:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1154 transitions. [2020-09-18 02:51:01,295 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1154 transitions. Word has length 48 [2020-09-18 02:51:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:51:01,295 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 1154 transitions. [2020-09-18 02:51:01,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-18 02:51:01,296 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1154 transitions. [2020-09-18 02:51:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-18 02:51:01,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:51:01,299 INFO L422 BasicCegarLoop]: trace histogram [20, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:51:01,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-09-18 02:51:01,513 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:51:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:51:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash 984619237, now seen corresponding path program 11 times [2020-09-18 02:51:01,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:51:01,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512876571] [2020-09-18 02:51:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:51:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:51:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-18 02:51:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512876571] [2020-09-18 02:51:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737528451] [2020-09-18 02:51:01,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:51:01,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-09-18 02:51:01,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 02:51:01,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 44 conjunts are in the unsatisfiable core [2020-09-18 02:51:01,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:51:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:51:03,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:51:03,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 43] total 57 [2020-09-18 02:51:03,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1208497686] [2020-09-18 02:51:03,621 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:51:03,630 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:51:03,655 INFO L274 McrAutomatonBuilder]: Finished intersection with 96 states and 140 transitions. [2020-09-18 02:51:03,655 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:51:05,164 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [11760#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0)), 11761#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 10 thread_function_dataraceThread1of1ForFork0_~i~0)), 11751#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 10) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 11752#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 11753#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 11754#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 11755#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 11756#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 11757#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 11758#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 11759#(or (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2))] [2020-09-18 02:51:05,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-18 02:51:05,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:51:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-18 02:51:05,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=3740, Unknown=0, NotChecked=0, Total=4556 [2020-09-18 02:51:05,166 INFO L87 Difference]: Start difference. First operand 579 states and 1154 transitions. Second operand 68 states. [2020-09-18 02:53:19,641 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 9