/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.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:43:23,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:43:23,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:43:23,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:43:23,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:43:23,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:43:23,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:43:23,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:43:23,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:43:23,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:43:23,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:43:23,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:43:23,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:43:23,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:43:23,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:43:23,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:43:23,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:43:23,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:43:23,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:43:23,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:43:23,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:43:23,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:43:23,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:43:23,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:43:23,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 22:43:23,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:43:23,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:43:23,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:43:23,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:43:23,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:43:23,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:43:23,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:43:23,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:43:23,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:43:23,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:43:23,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:43:23,852 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.epf [2020-10-21 22:43:23,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:43:23,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:43:23,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:43:23,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:43:23,905 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:43:23,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:43:23,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:43:23,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:43:23,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:43:23,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:43:23,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:43:23,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:43:23,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:43:23,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:43:23,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:43:23,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:43:23,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:43:23,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:43:23,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:43:23,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:43:23,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:43:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:43:23,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:43:23,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 22:43:23,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:43:23,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:43:23,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:43:23,912 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 22:43:23,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:43:24,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:43:24,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:43:24,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:43:24,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:43:24,285 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:43:24,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-21 22:43:24,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b94ed00/a767b28651dc42d1b0bc57154a00b11c/FLAGfd71e1ddc [2020-10-21 22:43:24,914 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:43:24,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-21 22:43:24,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b94ed00/a767b28651dc42d1b0bc57154a00b11c/FLAGfd71e1ddc [2020-10-21 22:43:25,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b94ed00/a767b28651dc42d1b0bc57154a00b11c [2020-10-21 22:43:25,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:43:25,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:43:25,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:43:25,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:43:25,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:43:25,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:25,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1771d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25, skipping insertion in model container [2020-10-21 22:43:25,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:25,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:43:25,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:43:25,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:43:25,819 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:43:25,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:43:25,954 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:43:25,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25 WrapperNode [2020-10-21 22:43:25,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:43:25,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:43:25,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:43:25,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:43:25,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:25,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:43:26,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:43:26,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:43:26,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:43:26,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (1/1) ... [2020-10-21 22:43:26,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:43:26,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:43:26,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:43:26,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:43:26,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (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 22:43:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 22:43:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 22:43:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:43:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:43:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:43:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:43:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:43:26,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:43:26,108 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 22:43:26,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:43:26,533 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-21 22:43:26,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:43:26 BoogieIcfgContainer [2020-10-21 22:43:26,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:43:26,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:43:26,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:43:26,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:43:26,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:43:25" (1/3) ... [2020-10-21 22:43:26,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f44d74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:43:26, skipping insertion in model container [2020-10-21 22:43:26,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:25" (2/3) ... [2020-10-21 22:43:26,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f44d74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:43:26, skipping insertion in model container [2020-10-21 22:43:26,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:43:26" (3/3) ... [2020-10-21 22:43:26,546 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-21 22:43:26,560 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:43:26,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:43:26,570 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 22:43:26,572 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:43:26,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:26,617 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:43:26,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:43:26,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:43:26,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:43:26,649 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 22:43:26,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:43:26,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:43:26,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:43:26,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:43:26,650 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:43:26,665 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 22:43:26,666 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-21 22:43:26,669 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-21 22:43:26,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-10-21 22:43:26,724 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-10-21 22:43:26,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:43:26,732 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-10-21 22:43:26,737 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-10-21 22:43:27,747 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-21 22:43:27,867 INFO L131 LiptonReduction]: Checked pairs total: 5998 [2020-10-21 22:43:27,867 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-21 22:43:27,875 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-10-21 22:43:27,899 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-10-21 22:43:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-21 22:43:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:43:27,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:27,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:27,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-10-21 22:43:27,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:27,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365108745] [2020-10-21 22:43:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,116 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 22:43:28,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365108745] [2020-10-21 22:43:28,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:28,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060177207] [2020-10-21 22:43:28,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 22:43:28,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 22:43:28,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 22:43:28,145 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-10-21 22:43:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,176 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-10-21 22:43:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 22:43:28,177 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-21 22:43:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,194 INFO L225 Difference]: With dead ends: 198 [2020-10-21 22:43:28,195 INFO L226 Difference]: Without dead ends: 198 [2020-10-21 22:43:28,196 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 22:43:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-21 22:43:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-21 22:43:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-21 22:43:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-10-21 22:43:28,276 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-10-21 22:43:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,277 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-10-21 22:43:28,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 22:43:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-10-21 22:43:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:43:28,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:28,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:28,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:43:28,281 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:28,281 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-10-21 22:43:28,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:28,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872183415] [2020-10-21 22:43:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,424 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 22:43:28,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872183415] [2020-10-21 22:43:28,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:28,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815622265] [2020-10-21 22:43:28,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:28,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:28,429 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-10-21 22:43:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,471 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-10-21 22:43:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:28,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 22:43:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,477 INFO L225 Difference]: With dead ends: 362 [2020-10-21 22:43:28,478 INFO L226 Difference]: Without dead ends: 362 [2020-10-21 22:43:28,479 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 22:43:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-21 22:43:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-10-21 22:43:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-21 22:43:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-10-21 22:43:28,531 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-10-21 22:43:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,532 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-10-21 22:43:28,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-10-21 22:43:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:43:28,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:28,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:28,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:43:28,534 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-10-21 22:43:28,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:28,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224225312] [2020-10-21 22:43:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,576 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 22:43:28,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224225312] [2020-10-21 22:43:28,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:28,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922087209] [2020-10-21 22:43:28,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:28,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:28,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:28,579 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-10-21 22:43:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,602 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-10-21 22:43:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:28,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 22:43:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,607 INFO L225 Difference]: With dead ends: 348 [2020-10-21 22:43:28,607 INFO L226 Difference]: Without dead ends: 348 [2020-10-21 22:43:28,607 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 22:43:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-21 22:43:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-10-21 22:43:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-21 22:43:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-10-21 22:43:28,624 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-10-21 22:43:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,624 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-10-21 22:43:28,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-10-21 22:43:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:43:28,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:28,627 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 22:43:28,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:43:28,628 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:28,628 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-10-21 22:43:28,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:28,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617323604] [2020-10-21 22:43:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,677 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 22:43:28,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617323604] [2020-10-21 22:43:28,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:43:28,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640014367] [2020-10-21 22:43:28,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:28,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:28,681 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-10-21 22:43:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,728 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-10-21 22:43:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:28,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 22:43:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,731 INFO L225 Difference]: With dead ends: 234 [2020-10-21 22:43:28,731 INFO L226 Difference]: Without dead ends: 234 [2020-10-21 22:43:28,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:43:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-21 22:43:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-10-21 22:43:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-21 22:43:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-10-21 22:43:28,745 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-10-21 22:43:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,746 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-10-21 22:43:28,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-10-21 22:43:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:43:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:28,749 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 22:43:28,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:43:28,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-10-21 22:43:28,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:28,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138979836] [2020-10-21 22:43:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,783 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 22:43:28,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138979836] [2020-10-21 22:43:28,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:43:28,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351055887] [2020-10-21 22:43:28,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:28,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:28,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:28,786 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-10-21 22:43:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,827 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-10-21 22:43:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:28,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 22:43:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,829 INFO L225 Difference]: With dead ends: 228 [2020-10-21 22:43:28,830 INFO L226 Difference]: Without dead ends: 228 [2020-10-21 22:43:28,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:43:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-21 22:43:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-21 22:43:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-21 22:43:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-10-21 22:43:28,839 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-10-21 22:43:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,840 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-10-21 22:43:28,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-10-21 22:43:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:43:28,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:28,842 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 22:43:28,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:43:28,842 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-10-21 22:43:28,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:28,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559795101] [2020-10-21 22:43:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:28,895 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 22:43:28,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559795101] [2020-10-21 22:43:28,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:43:28,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716932091] [2020-10-21 22:43:28,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:28,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:28,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:28,899 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-10-21 22:43:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:28,953 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-10-21 22:43:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:28,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 22:43:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:28,954 INFO L225 Difference]: With dead ends: 194 [2020-10-21 22:43:28,954 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:43:28,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:43:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:43:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:43:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:43:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:43:28,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-21 22:43:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:28,956 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:43:28,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:43:28,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:43:28,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:43:28,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:43:28 BasicIcfg [2020-10-21 22:43:28,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:43:28,963 INFO L168 Benchmark]: Toolchain (without parser) took 3774.55 ms. Allocated memory was 139.5 MB in the beginning and 250.6 MB in the end (delta: 111.1 MB). Free memory was 101.2 MB in the beginning and 164.5 MB in the end (delta: -63.3 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,964 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.64 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 100.4 MB in the beginning and 156.9 MB in the end (delta: -56.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 200.8 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,966 INFO L168 Benchmark]: Boogie Preprocessor took 34.45 ms. Allocated memory is still 200.8 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,967 INFO L168 Benchmark]: RCFGBuilder took 499.47 ms. Allocated memory is still 200.8 MB. Free memory was 153.5 MB in the beginning and 129.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,968 INFO L168 Benchmark]: TraceAbstraction took 2422.91 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 128.7 MB in the beginning and 164.5 MB in the end (delta: -35.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:28,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.64 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 100.4 MB in the beginning and 156.9 MB in the end (delta: -56.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 200.8 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.45 ms. Allocated memory is still 200.8 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.47 ms. Allocated memory is still 200.8 MB. Free memory was 153.5 MB in the beginning and 129.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2422.91 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 128.7 MB in the beginning and 164.5 MB in the end (delta: -35.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1354 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5998 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 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, 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, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...