/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:15:46,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:15:46,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:15:46,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:15:46,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:15:46,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:15:46,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:15:46,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:15:46,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:15:46,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:15:46,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:15:46,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:15:46,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:15:46,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:15:46,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:15:46,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:15:46,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:15:46,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:15:46,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:15:46,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:15:46,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:15:46,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:15:46,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:15:46,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:15:46,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 02:15:46,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:15:46,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:15:46,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:15:46,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:15:46,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:15:46,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:15:46,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:15:46,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:15:46,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:15:46,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:15:46,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:15:46,684 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-SP.epf [2020-10-22 02:15:46,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:15:46,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:15:46,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:15:46,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:15:46,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:15:46,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:15:46,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:15:46,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:15:46,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:15:46,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:15:46,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:15:46,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:15:46,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:15:46,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:15:46,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:15:46,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:15:46,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:15:46,731 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:15:46,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:15:46,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:15:46,731 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:15:47,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:15:47,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:15:47,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:15:47,065 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:15:47,066 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:15:47,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-22 02:15:47,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbe7ae43/c39af49872e8448597e934b8c4c73bd0/FLAG6174f0cc5 [2020-10-22 02:15:47,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:15:47,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-22 02:15:47,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbe7ae43/c39af49872e8448597e934b8c4c73bd0/FLAG6174f0cc5 [2020-10-22 02:15:48,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbe7ae43/c39af49872e8448597e934b8c4c73bd0 [2020-10-22 02:15:48,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:15:48,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:15:48,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:48,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:15:48,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:15:48,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33960956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48, skipping insertion in model container [2020-10-22 02:15:48,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:15:48,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:15:48,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:48,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:15:48,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:48,764 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:15:48,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48 WrapperNode [2020-10-22 02:15:48,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:48,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:48,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:15:48,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:15:48,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:48,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:15:48,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:15:48,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:15:48,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (1/1) ... [2020-10-22 02:15:48,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:15:48,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:15:48,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:15:48,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:15:48,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (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 [2020-10-22 02:15:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:15:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:15:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:15:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:15:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:15:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:15:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:15:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:15:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:15:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:15:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:15:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:15:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:15:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:15:48,937 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:15:49,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:15:49,380 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:15:49,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:49 BoogieIcfgContainer [2020-10-22 02:15:49,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:15:49,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:15:49,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:15:49,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:15:49,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:15:48" (1/3) ... [2020-10-22 02:15:49,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55596fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:49, skipping insertion in model container [2020-10-22 02:15:49,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:48" (2/3) ... [2020-10-22 02:15:49,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55596fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:49, skipping insertion in model container [2020-10-22 02:15:49,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:49" (3/3) ... [2020-10-22 02:15:49,392 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-10-22 02:15:49,404 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:15:49,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:15:49,412 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:15:49,413 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:15:49,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,455 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,465 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,465 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:49,472 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:15:49,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:15:49,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:15:49,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:15:49,508 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:15:49,509 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:15:49,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:15:49,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:15:49,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:15:49,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:15:49,522 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:15:49,523 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:15:49,526 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:15:49,528 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:15:49,574 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:15:49,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:15:49,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:15:49,588 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:15:51,241 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-22 02:15:51,622 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-22 02:15:51,739 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-22 02:15:51,745 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-22 02:15:51,745 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 02:15:51,752 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 02:15:51,780 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 02:15:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 02:15:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:15:51,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:51,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:51,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-22 02:15:51,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:51,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805626874] [2020-10-22 02:15:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805626874] [2020-10-22 02:15:52,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:52,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1164525207] [2020-10-22 02:15:52,052 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,057 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,069 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:15:52,070 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:52,073 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:52,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:52,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:52,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,087 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 02:15:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:52,138 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 02:15:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:52,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 02:15:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:52,156 INFO L225 Difference]: With dead ends: 282 [2020-10-22 02:15:52,157 INFO L226 Difference]: Without dead ends: 218 [2020-10-22 02:15:52,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-22 02:15:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-22 02:15:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 02:15:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-22 02:15:52,260 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-22 02:15:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:52,262 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-22 02:15:52,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-22 02:15:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:15:52,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:52,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:52,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:15:52,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1794997166, now seen corresponding path program 1 times [2020-10-22 02:15:52,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:52,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567487957] [2020-10-22 02:15:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567487957] [2020-10-22 02:15:52,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:52,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1225782561] [2020-10-22 02:15:52,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,422 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,424 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 02:15:52,424 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:52,443 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:52,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:52,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:52,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:52,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:52,446 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-22 02:15:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:52,473 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-10-22 02:15:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:52,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:15:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:52,476 INFO L225 Difference]: With dead ends: 278 [2020-10-22 02:15:52,477 INFO L226 Difference]: Without dead ends: 182 [2020-10-22 02:15:52,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-22 02:15:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-22 02:15:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-22 02:15:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-10-22 02:15:52,495 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-10-22 02:15:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:52,496 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-10-22 02:15:52,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-10-22 02:15:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:15:52,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:52,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:52,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:15:52,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash -918467642, now seen corresponding path program 1 times [2020-10-22 02:15:52,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:52,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852091287] [2020-10-22 02:15:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852091287] [2020-10-22 02:15:52,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:52,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [192556093] [2020-10-22 02:15:52,558 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,559 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,561 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 02:15:52,562 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:52,578 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:52,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:52,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:52,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:52,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:52,580 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-10-22 02:15:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:52,606 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-10-22 02:15:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:15:52,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 02:15:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:52,608 INFO L225 Difference]: With dead ends: 218 [2020-10-22 02:15:52,609 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 02:15:52,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 02:15:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 02:15:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 02:15:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-22 02:15:52,622 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-22 02:15:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:52,622 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-22 02:15:52,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-22 02:15:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:15:52,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:52,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:52,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:15:52,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 1 times [2020-10-22 02:15:52,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:52,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608890666] [2020-10-22 02:15:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608890666] [2020-10-22 02:15:52,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:52,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1059933597] [2020-10-22 02:15:52,696 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,697 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,699 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-22 02:15:52,699 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:52,784 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:52,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:52,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:52,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:52,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,785 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-22 02:15:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:52,793 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-22 02:15:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:52,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 02:15:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:52,795 INFO L225 Difference]: With dead ends: 144 [2020-10-22 02:15:52,796 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 02:15:52,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 02:15:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 02:15:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 02:15:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 02:15:52,807 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-22 02:15:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:52,807 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 02:15:52,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 02:15:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:52,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:52,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:52,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:15:52,810 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-10-22 02:15:52,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:52,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797969652] [2020-10-22 02:15:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797969652] [2020-10-22 02:15:52,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:52,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1903469341] [2020-10-22 02:15:52,848 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,849 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,851 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 02:15:52,851 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:52,871 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:52,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:52,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:52,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:52,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,872 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 3 states. [2020-10-22 02:15:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:52,885 INFO L93 Difference]: Finished difference Result 176 states and 415 transitions. [2020-10-22 02:15:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:52,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 02:15:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:52,888 INFO L225 Difference]: With dead ends: 176 [2020-10-22 02:15:52,888 INFO L226 Difference]: Without dead ends: 152 [2020-10-22 02:15:52,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-22 02:15:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2020-10-22 02:15:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-22 02:15:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 331 transitions. [2020-10-22 02:15:52,907 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 331 transitions. Word has length 12 [2020-10-22 02:15:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:52,907 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 331 transitions. [2020-10-22 02:15:52,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 331 transitions. [2020-10-22 02:15:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:52,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:52,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:52,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:15:52,911 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-10-22 02:15:52,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:52,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545776528] [2020-10-22 02:15:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:52,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545776528] [2020-10-22 02:15:52,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:52,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:52,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1674423517] [2020-10-22 02:15:52,994 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:52,995 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:52,999 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-22 02:15:52,999 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:53,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:53,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:53,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:53,367 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3468#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 02:15:53,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:15:53,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:15:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:53,368 INFO L87 Difference]: Start difference. First operand 140 states and 331 transitions. Second operand 5 states. [2020-10-22 02:15:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:53,425 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-22 02:15:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:15:53,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:15:53,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:53,426 INFO L225 Difference]: With dead ends: 136 [2020-10-22 02:15:53,427 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 02:15:53,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:15:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 02:15:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-22 02:15:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 02:15:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 02:15:53,432 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 12 [2020-10-22 02:15:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:53,433 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 02:15:53,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:15:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 02:15:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:15:53,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:53,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:53,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:15:53,435 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-22 02:15:53,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:53,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481116874] [2020-10-22 02:15:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:53,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481116874] [2020-10-22 02:15:53,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:53,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:15:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1035213969] [2020-10-22 02:15:53,502 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:53,504 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:53,509 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-10-22 02:15:53,510 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:53,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:53,659 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3808#(not (= ~__unbuffered_cnt~0 2)), 3809#(not (= ~__unbuffered_cnt~0 1)), 3810#(<= ~__unbuffered_cnt~0 0), 3807#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 02:15:53,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 02:15:53,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:53,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 02:15:53,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-22 02:15:53,661 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-22 02:15:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:53,721 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 02:15:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:15:53,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 02:15:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:53,722 INFO L225 Difference]: With dead ends: 92 [2020-10-22 02:15:53,723 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 02:15:53,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-22 02:15:53,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 02:15:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 02:15:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 02:15:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 02:15:53,725 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 02:15:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:53,726 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 02:15:53,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 02:15:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 02:15:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:15:53,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:53,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:53,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:15:53,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:53,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-22 02:15:53,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:53,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397895395] [2020-10-22 02:15:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:53,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397895395] [2020-10-22 02:15:53,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:53,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:53,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [575620816] [2020-10-22 02:15:53,767 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:53,769 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:53,782 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-10-22 02:15:53,783 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:53,884 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:53,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:53,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:53,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:53,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:53,886 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 02:15:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:53,899 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 02:15:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:53,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 02:15:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:53,900 INFO L225 Difference]: With dead ends: 35 [2020-10-22 02:15:53,900 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:15:53,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:15:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:15:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:15:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:15:53,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:15:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:53,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:15:53,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:15:53,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:15:53,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:15:53,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:15:53 BasicIcfg [2020-10-22 02:15:53,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:15:53,908 INFO L168 Benchmark]: Toolchain (without parser) took 5843.51 ms. Allocated memory was 140.5 MB in the beginning and 282.6 MB in the end (delta: 142.1 MB). Free memory was 100.5 MB in the beginning and 153.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,909 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.20 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 160.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,911 INFO L168 Benchmark]: Boogie Preprocessor took 29.07 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,912 INFO L168 Benchmark]: RCFGBuilder took 532.42 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 132.5 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,913 INFO L168 Benchmark]: TraceAbstraction took 4522.17 ms. Allocated memory was 205.0 MB in the beginning and 282.6 MB in the end (delta: 77.6 MB). Free memory was 131.8 MB in the beginning and 153.2 MB in the end (delta: -21.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:53,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.20 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 160.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.07 ms. Allocated memory is still 205.0 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.42 ms. Allocated memory is still 205.0 MB. Free memory was 156.3 MB in the beginning and 132.5 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4522.17 ms. Allocated memory was 205.0 MB in the beginning and 282.6 MB in the end (delta: 77.6 MB). Free memory was 131.8 MB in the beginning and 153.2 MB in the end (delta: -21.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 150 SDtfs, 136 SDslu, 180 SDs, 0 SdLazy, 106 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...