/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-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:43:02,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:43:02,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:43:02,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:43:02,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:43:02,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:43:02,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:43:02,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:43:02,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:43:02,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:43:02,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:43:02,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:43:02,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:43:02,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:43:02,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:43:02,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:43:02,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:43:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:43:02,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:43:02,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:43:02,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:43:02,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:43:02,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:43:02,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:43:02,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 23:43:02,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:43:02,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:43:02,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:43:02,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:43:02,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:43:02,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:43:02,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:43:02,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:43:02,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:43:02,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:43:02,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:43:02,805 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 [2020-10-21 23:43:02,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:43:02,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:43:02,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:43:02,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:43:02,851 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:43:02,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:43:02,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:43:02,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:43:02,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:43:02,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:43:02,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:43:02,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:43:02,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:43:02,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:43:02,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:43:02,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:43:02,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:43:02,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:43:02,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:43:02,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:43:02,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:43:02,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:43:02,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:43:02,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:43:02,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:43:02,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:43:02,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:43:02,857 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-21 23:43:02,858 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:43:02,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:43:02,859 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-21 23:43:03,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:43:03,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:43:03,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:43:03,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:43:03,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:43:03,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-21 23:43:03,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f54c7c4c1/b79b1376edba443c94cea304b4779ff3/FLAG0a35fce3f [2020-10-21 23:43:03,844 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:43:03,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-21 23:43:03,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f54c7c4c1/b79b1376edba443c94cea304b4779ff3/FLAG0a35fce3f [2020-10-21 23:43:04,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f54c7c4c1/b79b1376edba443c94cea304b4779ff3 [2020-10-21 23:43:04,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:43:04,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:43:04,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:43:04,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:43:04,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:43:04,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aedcfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04, skipping insertion in model container [2020-10-21 23:43:04,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:43:04,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:43:04,514 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 23:43:04,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:43:04,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:43:04,777 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 23:43:04,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:43:04,881 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:43:04,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04 WrapperNode [2020-10-21 23:43:04,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:43:04,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:43:04,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:43:04,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:43:04,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:43:04,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:43:04,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:43:04,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:43:04,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:43:04,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:43:04,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:43:04,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:43:04,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (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 [2020-10-21 23:43:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 23:43:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 23:43:05,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 23:43:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 23:43:05,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 23:43:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:43:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:43:05,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:43:05,035 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:43:05,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:43:05,459 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-21 23:43:05,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:43:05 BoogieIcfgContainer [2020-10-21 23:43:05,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:43:05,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:43:05,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:43:05,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:43:05,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:43:04" (1/3) ... [2020-10-21 23:43:05,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c3b88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:43:05, skipping insertion in model container [2020-10-21 23:43:05,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04" (2/3) ... [2020-10-21 23:43:05,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c3b88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:43:05, skipping insertion in model container [2020-10-21 23:43:05,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:43:05" (3/3) ... [2020-10-21 23:43:05,479 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-21 23:43:05,489 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:43:05,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:43:05,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 23:43:05,499 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:43:05,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,533 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,533 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,560 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,561 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,561 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,570 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 23:43:05,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 23:43:05,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:43:05,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:43:05,602 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:43:05,602 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-21 23:43:05,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:43:05,602 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:43:05,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:43:05,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:43:05,622 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:43:05,623 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-21 23:43:05,626 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-21 23:43:05,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 127 transitions, 276 flow [2020-10-21 23:43:05,696 INFO L129 PetriNetUnfolder]: 27/127 cut-off events. [2020-10-21 23:43:05,697 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-21 23:43:05,710 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 127 events. 27/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 293 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2020-10-21 23:43:05,719 INFO L116 LiptonReduction]: Number of co-enabled transitions 5016 [2020-10-21 23:43:07,276 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-21 23:43:07,389 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-21 23:43:07,445 INFO L131 LiptonReduction]: Checked pairs total: 19266 [2020-10-21 23:43:07,445 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-21 23:43:07,454 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 77 transitions, 176 flow [2020-10-21 23:43:07,534 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1149 states. [2020-10-21 23:43:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states. [2020-10-21 23:43:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 23:43:07,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:07,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 23:43:07,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash 16977884, now seen corresponding path program 1 times [2020-10-21 23:43:07,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:07,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870868769] [2020-10-21 23:43:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:07,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870868769] [2020-10-21 23:43:07,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:07,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:43:07,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [269511866] [2020-10-21 23:43:07,779 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:07,782 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:07,796 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-21 23:43:07,796 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:07,801 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:07,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 23:43:07,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:07,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 23:43:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 23:43:07,820 INFO L87 Difference]: Start difference. First operand 1149 states. Second operand 2 states. [2020-10-21 23:43:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:07,880 INFO L93 Difference]: Finished difference Result 1149 states and 3258 transitions. [2020-10-21 23:43:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 23:43:07,881 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-21 23:43:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:07,918 INFO L225 Difference]: With dead ends: 1149 [2020-10-21 23:43:07,919 INFO L226 Difference]: Without dead ends: 1053 [2020-10-21 23:43:07,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 23:43:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-10-21 23:43:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2020-10-21 23:43:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-10-21 23:43:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 3038 transitions. [2020-10-21 23:43:08,073 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 3038 transitions. Word has length 4 [2020-10-21 23:43:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,073 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 3038 transitions. [2020-10-21 23:43:08,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 23:43:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 3038 transitions. [2020-10-21 23:43:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:43:08,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:08,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:08,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:43:08,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1633019095, now seen corresponding path program 1 times [2020-10-21 23:43:08,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:08,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561272939] [2020-10-21 23:43:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561272939] [2020-10-21 23:43:08,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:43:08,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2001936919] [2020-10-21 23:43:08,160 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,161 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,162 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-21 23:43:08,162 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,162 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:08,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:43:08,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:43:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:08,164 INFO L87 Difference]: Start difference. First operand 1053 states and 3038 transitions. Second operand 3 states. [2020-10-21 23:43:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,244 INFO L93 Difference]: Finished difference Result 1000 states and 2836 transitions. [2020-10-21 23:43:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:43:08,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 23:43:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,254 INFO L225 Difference]: With dead ends: 1000 [2020-10-21 23:43:08,255 INFO L226 Difference]: Without dead ends: 760 [2020-10-21 23:43:08,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-21 23:43:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 742. [2020-10-21 23:43:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-21 23:43:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2158 transitions. [2020-10-21 23:43:08,287 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2158 transitions. Word has length 10 [2020-10-21 23:43:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,288 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 2158 transitions. [2020-10-21 23:43:08,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:43:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2158 transitions. [2020-10-21 23:43:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:43:08,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:08,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:08,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:43:08,298 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash 747848459, now seen corresponding path program 1 times [2020-10-21 23:43:08,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:08,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378639306] [2020-10-21 23:43:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378639306] [2020-10-21 23:43:08,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:43:08,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1168962307] [2020-10-21 23:43:08,418 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,420 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,422 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-21 23:43:08,422 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,423 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:08,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:43:08,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:43:08,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:08,424 INFO L87 Difference]: Start difference. First operand 742 states and 2158 transitions. Second operand 3 states. [2020-10-21 23:43:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,474 INFO L93 Difference]: Finished difference Result 705 states and 2043 transitions. [2020-10-21 23:43:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:43:08,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-21 23:43:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,479 INFO L225 Difference]: With dead ends: 705 [2020-10-21 23:43:08,479 INFO L226 Difference]: Without dead ends: 560 [2020-10-21 23:43:08,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-21 23:43:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2020-10-21 23:43:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-21 23:43:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1667 transitions. [2020-10-21 23:43:08,501 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1667 transitions. Word has length 12 [2020-10-21 23:43:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,502 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1667 transitions. [2020-10-21 23:43:08,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:43:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1667 transitions. [2020-10-21 23:43:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:43:08,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:08,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:08,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:43:08,511 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash 202085034, now seen corresponding path program 1 times [2020-10-21 23:43:08,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:08,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872356665] [2020-10-21 23:43:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872356665] [2020-10-21 23:43:08,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:43:08,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1439225789] [2020-10-21 23:43:08,591 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,593 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,598 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 89 transitions. [2020-10-21 23:43:08,598 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,698 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:08,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:43:08,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:43:08,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:43:08,700 INFO L87 Difference]: Start difference. First operand 560 states and 1667 transitions. Second operand 4 states. [2020-10-21 23:43:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,809 INFO L93 Difference]: Finished difference Result 1130 states and 3336 transitions. [2020-10-21 23:43:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:43:08,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-21 23:43:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,814 INFO L225 Difference]: With dead ends: 1130 [2020-10-21 23:43:08,815 INFO L226 Difference]: Without dead ends: 626 [2020-10-21 23:43:08,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:43:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-21 23:43:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 604. [2020-10-21 23:43:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-21 23:43:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1759 transitions. [2020-10-21 23:43:08,836 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1759 transitions. Word has length 19 [2020-10-21 23:43:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,836 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1759 transitions. [2020-10-21 23:43:08,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:43:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1759 transitions. [2020-10-21 23:43:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:43:08,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:08,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:08,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:43:08,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash -72904488, now seen corresponding path program 2 times [2020-10-21 23:43:08,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:08,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530268103] [2020-10-21 23:43:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530268103] [2020-10-21 23:43:08,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:43:08,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [419201459] [2020-10-21 23:43:08,873 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,879 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-10-21 23:43:08,880 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,942 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12327#(not (= ~x~0 1))] [2020-10-21 23:43:08,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:43:08,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:43:08,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:43:08,944 INFO L87 Difference]: Start difference. First operand 604 states and 1759 transitions. Second operand 4 states. [2020-10-21 23:43:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,981 INFO L93 Difference]: Finished difference Result 1004 states and 2699 transitions. [2020-10-21 23:43:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:43:08,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-21 23:43:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,991 INFO L225 Difference]: With dead ends: 1004 [2020-10-21 23:43:08,991 INFO L226 Difference]: Without dead ends: 1004 [2020-10-21 23:43:08,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:43:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-21 23:43:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 686. [2020-10-21 23:43:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-21 23:43:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1976 transitions. [2020-10-21 23:43:09,024 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1976 transitions. Word has length 19 [2020-10-21 23:43:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:09,025 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1976 transitions. [2020-10-21 23:43:09,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:43:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1976 transitions. [2020-10-21 23:43:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:43:09,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:09,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:09,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:43:09,028 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2100824202, now seen corresponding path program 3 times [2020-10-21 23:43:09,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:09,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399760083] [2020-10-21 23:43:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:09,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399760083] [2020-10-21 23:43:09,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:09,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:43:09,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2083964203] [2020-10-21 23:43:09,066 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:09,068 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:09,072 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-10-21 23:43:09,072 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:09,164 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14707#(not (= ~x~0 1))] [2020-10-21 23:43:09,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:43:09,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:09,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:43:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:43:09,166 INFO L87 Difference]: Start difference. First operand 686 states and 1976 transitions. Second operand 4 states. [2020-10-21 23:43:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:09,189 INFO L93 Difference]: Finished difference Result 754 states and 1974 transitions. [2020-10-21 23:43:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:43:09,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-21 23:43:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:09,196 INFO L225 Difference]: With dead ends: 754 [2020-10-21 23:43:09,196 INFO L226 Difference]: Without dead ends: 748 [2020-10-21 23:43:09,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:43:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-21 23:43:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 600. [2020-10-21 23:43:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-21 23:43:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1629 transitions. [2020-10-21 23:43:09,219 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1629 transitions. Word has length 19 [2020-10-21 23:43:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:09,219 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 1629 transitions. [2020-10-21 23:43:09,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:43:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1629 transitions. [2020-10-21 23:43:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:43:09,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:09,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:09,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:43:09,222 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1908285911, now seen corresponding path program 1 times [2020-10-21 23:43:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:09,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286076216] [2020-10-21 23:43:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:09,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286076216] [2020-10-21 23:43:09,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:09,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:43:09,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1391272411] [2020-10-21 23:43:09,254 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:09,255 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:09,259 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 73 transitions. [2020-10-21 23:43:09,260 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:09,341 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:09,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:43:09,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:09,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:43:09,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:09,343 INFO L87 Difference]: Start difference. First operand 600 states and 1629 transitions. Second operand 3 states. [2020-10-21 23:43:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:09,380 INFO L93 Difference]: Finished difference Result 720 states and 1899 transitions. [2020-10-21 23:43:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:43:09,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 23:43:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:09,384 INFO L225 Difference]: With dead ends: 720 [2020-10-21 23:43:09,384 INFO L226 Difference]: Without dead ends: 482 [2020-10-21 23:43:09,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-21 23:43:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 396. [2020-10-21 23:43:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-21 23:43:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 991 transitions. [2020-10-21 23:43:09,397 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 991 transitions. Word has length 19 [2020-10-21 23:43:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:09,398 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 991 transitions. [2020-10-21 23:43:09,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:43:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 991 transitions. [2020-10-21 23:43:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 23:43:09,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:09,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:09,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:43:09,400 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash 939932151, now seen corresponding path program 1 times [2020-10-21 23:43:09,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:09,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069758546] [2020-10-21 23:43:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:09,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069758546] [2020-10-21 23:43:09,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:09,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:43:09,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270256060] [2020-10-21 23:43:09,433 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:09,435 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:09,439 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-21 23:43:09,439 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:09,556 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [18181#(<= 1 thr1Thread1of1ForFork0_~b21~0), 18182#(<= 1 ~b2~0)] [2020-10-21 23:43:09,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:43:09,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:09,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:43:09,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:43:09,557 INFO L87 Difference]: Start difference. First operand 396 states and 991 transitions. Second operand 6 states. [2020-10-21 23:43:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:09,606 INFO L93 Difference]: Finished difference Result 464 states and 1139 transitions. [2020-10-21 23:43:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:43:09,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-21 23:43:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:09,609 INFO L225 Difference]: With dead ends: 464 [2020-10-21 23:43:09,610 INFO L226 Difference]: Without dead ends: 378 [2020-10-21 23:43:09,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-21 23:43:09,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-21 23:43:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 342. [2020-10-21 23:43:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-21 23:43:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 825 transitions. [2020-10-21 23:43:09,621 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 825 transitions. Word has length 22 [2020-10-21 23:43:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:09,621 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 825 transitions. [2020-10-21 23:43:09,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:43:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 825 transitions. [2020-10-21 23:43:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 23:43:09,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:09,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:09,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:43:09,623 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash -616648577, now seen corresponding path program 1 times [2020-10-21 23:43:09,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:09,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803411717] [2020-10-21 23:43:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:09,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803411717] [2020-10-21 23:43:09,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:09,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:43:09,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2141946242] [2020-10-21 23:43:09,666 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:09,668 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:09,673 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-10-21 23:43:09,673 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:09,783 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19339#(<= 1 thr2Thread1of1ForFork1_~b12~0), 19340#(<= 1 ~b1~0)] [2020-10-21 23:43:09,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:43:09,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:43:09,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:43:09,785 INFO L87 Difference]: Start difference. First operand 342 states and 825 transitions. Second operand 6 states. [2020-10-21 23:43:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:09,803 INFO L93 Difference]: Finished difference Result 160 states and 404 transitions. [2020-10-21 23:43:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:43:09,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-21 23:43:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:09,804 INFO L225 Difference]: With dead ends: 160 [2020-10-21 23:43:09,805 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:43:09,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:43:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:43:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:43:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:43:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:43:09,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-21 23:43:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:09,806 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:43:09,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:43:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:43:09,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:43:09,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:43:09,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:43:09 BasicIcfg [2020-10-21 23:43:09,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:43:09,814 INFO L168 Benchmark]: Toolchain (without parser) took 5697.77 ms. Allocated memory was 148.4 MB in the beginning and 280.5 MB in the end (delta: 132.1 MB). Free memory was 103.2 MB in the beginning and 130.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,815 INFO L168 Benchmark]: CDTParser took 3.25 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.59 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.2 MB in the beginning and 159.7 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.35 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 157.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,817 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,818 INFO L168 Benchmark]: RCFGBuilder took 500.42 ms. Allocated memory is still 204.5 MB. Free memory was 155.1 MB in the beginning and 127.1 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,819 INFO L168 Benchmark]: TraceAbstraction took 4345.40 ms. Allocated memory was 204.5 MB in the beginning and 280.5 MB in the end (delta: 76.0 MB). Free memory was 126.5 MB in the beginning and 130.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:09,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.25 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.59 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.2 MB in the beginning and 159.7 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.35 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 157.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.65 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.42 ms. Allocated memory is still 204.5 MB. Free memory was 155.1 MB in the beginning and 127.1 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4345.40 ms. Allocated memory was 204.5 MB in the beginning and 280.5 MB in the end (delta: 76.0 MB). Free memory was 126.5 MB in the beginning and 130.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2359 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 652 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 106 PlacesBefore, 62 PlacesAfterwards, 127 TransitionsBefore, 77 TransitionsAfterwards, 5016 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 73 TotalNumberOfCompositions, 19266 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 689 SDtfs, 425 SDslu, 783 SDs, 0 SdLazy, 176 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1149occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 628 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...