/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 13:58:46,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 13:58:46,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 13:58:46,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 13:58:46,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 13:58:46,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 13:58:46,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 13:58:46,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 13:58:46,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 13:58:46,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 13:58:46,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 13:58:46,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 13:58:46,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 13:58:46,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 13:58:46,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 13:58:46,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 13:58:46,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 13:58:46,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 13:58:46,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 13:58:46,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 13:58:46,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 13:58:46,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 13:58:46,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 13:58:46,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 13:58:46,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 13:58:46,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 13:58:46,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 13:58:46,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 13:58:46,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 13:58:46,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 13:58:46,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 13:58:46,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 13:58:46,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 13:58:46,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 13:58:46,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 13:58:46,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 13:58:46,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 13:58:46,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 13:58:46,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 13:58:46,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 13:58:46,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 13:58:46,735 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 13:58:46,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 13:58:46,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 13:58:46,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 13:58:46,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 13:58:46,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 13:58:46,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 13:58:46,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 13:58:46,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 13:58:46,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 13:58:46,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 13:58:46,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 13:58:46,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 13:58:46,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 13:58:46,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 13:58:46,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 13:58:46,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 13:58:46,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:58:46,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 13:58:46,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 13:58:46,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 13:58:46,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 13:58:46,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 13:58:46,742 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 13:58:46,742 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 13:58:46,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 13:58:46,742 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 13:58:47,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 13:58:47,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 13:58:47,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 13:58:47,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 13:58:47,230 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 13:58:47,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-09-15 13:58:47,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e16d1ce1/f46312ba8c9b4cbe91f6fe3f52001995/FLAGe8a4310f6 [2020-09-15 13:58:47,970 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 13:58:47,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-09-15 13:58:47,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e16d1ce1/f46312ba8c9b4cbe91f6fe3f52001995/FLAGe8a4310f6 [2020-09-15 13:58:48,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e16d1ce1/f46312ba8c9b4cbe91f6fe3f52001995 [2020-09-15 13:58:48,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 13:58:48,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 13:58:48,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 13:58:48,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 13:58:48,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 13:58:48,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:58:48" (1/1) ... [2020-09-15 13:58:48,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba437c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:48, skipping insertion in model container [2020-09-15 13:58:48,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:58:48" (1/1) ... [2020-09-15 13:58:48,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 13:58:48,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 13:58:48,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:58:48,862 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 13:58:48,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:58:49,000 INFO L208 MainTranslator]: Completed translation [2020-09-15 13:58:49,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49 WrapperNode [2020-09-15 13:58:49,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 13:58:49,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 13:58:49,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 13:58:49,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 13:58:49,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 13:58:49,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 13:58:49,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 13:58:49,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 13:58:49,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... [2020-09-15 13:58:49,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 13:58:49,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 13:58:49,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 13:58:49,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 13:58:49,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:58:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 13:58:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 13:58:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 13:58:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 13:58:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 13:58:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 13:58:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 13:58:49,194 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 13:58:49,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 13:58:49,608 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-15 13:58:49,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:58:49 BoogieIcfgContainer [2020-09-15 13:58:49,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 13:58:49,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 13:58:49,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 13:58:49,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 13:58:49,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:58:48" (1/3) ... [2020-09-15 13:58:49,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa2455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:58:49, skipping insertion in model container [2020-09-15 13:58:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:58:49" (2/3) ... [2020-09-15 13:58:49,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa2455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:58:49, skipping insertion in model container [2020-09-15 13:58:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:58:49" (3/3) ... [2020-09-15 13:58:49,624 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-09-15 13:58:49,635 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 13:58:49,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 13:58:49,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-15 13:58:49,650 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 13:58:49,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:58:49,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 13:58:49,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:58:49,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:58:49,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:58:49,738 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 13:58:49,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:58:49,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:58:49,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:58:49,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:58:49,755 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-09-15 13:58:49,757 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-09-15 13:58:49,804 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-09-15 13:58:49,804 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 13:58:49,812 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-09-15 13:58:49,816 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-09-15 13:58:49,839 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-09-15 13:58:49,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 13:58:49,841 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-09-15 13:58:49,845 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2400 [2020-09-15 13:58:49,846 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:58:50,620 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4373 [2020-09-15 13:58:50,620 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-09-15 13:58:50,625 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-09-15 13:58:50,665 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-09-15 13:58:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-09-15 13:58:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 13:58:50,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:50,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:50,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:50,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-09-15 13:58:50,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:50,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808011064] [2020-09-15 13:58:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:50,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808011064] [2020-09-15 13:58:50,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:50,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 13:58:50,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1282654629] [2020-09-15 13:58:50,971 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:50,974 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:50,992 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-15 13:58:50,992 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:50,995 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:50,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 13:58:50,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 13:58:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 13:58:51,013 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-09-15 13:58:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,032 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-09-15 13:58:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 13:58:51,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-09-15 13:58:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,053 INFO L225 Difference]: With dead ends: 198 [2020-09-15 13:58:51,054 INFO L226 Difference]: Without dead ends: 198 [2020-09-15 13:58:51,056 INFO L675 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 [2020-09-15 13:58:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-15 13:58:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-15 13:58:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-15 13:58:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-09-15 13:58:51,125 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-09-15 13:58:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,126 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-09-15 13:58:51,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 13:58:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-09-15 13:58:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 13:58:51,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 13:58:51,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-09-15 13:58:51,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209943021] [2020-09-15 13:58:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:51,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209943021] [2020-09-15 13:58:51,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:51,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 13:58:51,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [28656209] [2020-09-15 13:58:51,234 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:51,235 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:51,236 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-15 13:58:51,237 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:51,237 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:51,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:51,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:51,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,240 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-09-15 13:58:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,281 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-09-15 13:58:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:51,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 13:58:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,289 INFO L225 Difference]: With dead ends: 362 [2020-09-15 13:58:51,289 INFO L226 Difference]: Without dead ends: 362 [2020-09-15 13:58:51,290 INFO L675 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 [2020-09-15 13:58:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-15 13:58:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-09-15 13:58:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-15 13:58:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-09-15 13:58:51,360 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-09-15 13:58:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,363 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-09-15 13:58:51,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-09-15 13:58:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 13:58:51,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 13:58:51,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-09-15 13:58:51,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691130347] [2020-09-15 13:58:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:51,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691130347] [2020-09-15 13:58:51,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:51,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 13:58:51,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1482211684] [2020-09-15 13:58:51,446 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:51,447 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:51,448 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-15 13:58:51,448 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:51,448 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:51,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:51,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,450 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-09-15 13:58:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,478 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-09-15 13:58:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:51,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 13:58:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,483 INFO L225 Difference]: With dead ends: 348 [2020-09-15 13:58:51,483 INFO L226 Difference]: Without dead ends: 348 [2020-09-15 13:58:51,483 INFO L675 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 [2020-09-15 13:58:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-15 13:58:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-09-15 13:58:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-15 13:58:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-09-15 13:58:51,501 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-09-15 13:58:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,501 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-09-15 13:58:51,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-09-15 13:58:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:58:51,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 13:58:51,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-09-15 13:58:51,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384457038] [2020-09-15 13:58:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:51,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384457038] [2020-09-15 13:58:51,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:51,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:58:51,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1652061855] [2020-09-15 13:58:51,564 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:51,568 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:51,572 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-09-15 13:58:51,572 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:51,609 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:51,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:51,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,611 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-09-15 13:58:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,674 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2020-09-15 13:58:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:51,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-15 13:58:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,677 INFO L225 Difference]: With dead ends: 220 [2020-09-15 13:58:51,678 INFO L226 Difference]: Without dead ends: 220 [2020-09-15 13:58:51,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-15 13:58:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-15 13:58:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-15 13:58:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2020-09-15 13:58:51,693 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2020-09-15 13:58:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,693 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2020-09-15 13:58:51,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2020-09-15 13:58:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:58:51,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 13:58:51,697 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash 952506058, now seen corresponding path program 1 times [2020-09-15 13:58:51,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206535885] [2020-09-15 13:58:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206535885] [2020-09-15 13:58:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:51,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:58:51,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [170476044] [2020-09-15 13:58:51,755 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:51,757 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:51,759 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-09-15 13:58:51,759 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:51,764 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:51,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:51,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,766 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand 3 states. [2020-09-15 13:58:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,809 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2020-09-15 13:58:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:51,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-15 13:58:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,813 INFO L225 Difference]: With dead ends: 240 [2020-09-15 13:58:51,813 INFO L226 Difference]: Without dead ends: 240 [2020-09-15 13:58:51,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-15 13:58:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2020-09-15 13:58:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-15 13:58:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2020-09-15 13:58:51,825 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2020-09-15 13:58:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,826 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2020-09-15 13:58:51,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2020-09-15 13:58:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:58:51,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 13:58:51,830 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -687819132, now seen corresponding path program 2 times [2020-09-15 13:58:51,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582556448] [2020-09-15 13:58:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:51,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582556448] [2020-09-15 13:58:51,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:51,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:58:51,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [833178883] [2020-09-15 13:58:51,894 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:51,895 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:51,897 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-09-15 13:58:51,897 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:51,902 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:51,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:51,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:51,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:51,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,903 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand 3 states. [2020-09-15 13:58:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:51,946 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2020-09-15 13:58:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:51,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-15 13:58:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:51,949 INFO L225 Difference]: With dead ends: 228 [2020-09-15 13:58:51,949 INFO L226 Difference]: Without dead ends: 228 [2020-09-15 13:58:51,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-15 13:58:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-09-15 13:58:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-15 13:58:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2020-09-15 13:58:51,958 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2020-09-15 13:58:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:51,959 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2020-09-15 13:58:51,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2020-09-15 13:58:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:58:51,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:58:51,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:58:51,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 13:58:51,961 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:58:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:58:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash -36638496, now seen corresponding path program 3 times [2020-09-15 13:58:51,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:58:51,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827796398] [2020-09-15 13:58:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:58:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:58:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:58:52,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827796398] [2020-09-15 13:58:52,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:58:52,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:58:52,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [570229990] [2020-09-15 13:58:52,005 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:58:52,006 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:58:52,007 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-09-15 13:58:52,007 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:58:52,016 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:58:52,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:58:52,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:58:52,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:58:52,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:52,017 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand 3 states. [2020-09-15 13:58:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:58:52,062 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-09-15 13:58:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:58:52,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-15 13:58:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:58:52,063 INFO L225 Difference]: With dead ends: 194 [2020-09-15 13:58:52,063 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 13:58:52,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:58:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 13:58:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 13:58:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 13:58:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 13:58:52,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-15 13:58:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:58:52,065 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 13:58:52,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:58:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 13:58:52,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 13:58:52,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 13:58:52,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 01:58:52 BasicIcfg [2020-09-15 13:58:52,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 13:58:52,075 INFO L168 Benchmark]: Toolchain (without parser) took 3813.66 ms. Allocated memory was 141.6 MB in the beginning and 249.0 MB in the end (delta: 107.5 MB). Free memory was 101.8 MB in the beginning and 191.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-15 13:58:52,076 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 13:58:52,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.56 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 166.4 MB in the end (delta: -65.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-15 13:58:52,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.32 ms. Allocated memory is still 206.0 MB. Free memory was 166.4 MB in the beginning and 164.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 13:58:52,079 INFO L168 Benchmark]: Boogie Preprocessor took 36.61 ms. Allocated memory is still 206.0 MB. Free memory was 164.5 MB in the beginning and 163.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 13:58:52,080 INFO L168 Benchmark]: RCFGBuilder took 499.92 ms. Allocated memory is still 206.0 MB. Free memory was 162.6 MB in the beginning and 141.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-15 13:58:52,081 INFO L168 Benchmark]: TraceAbstraction took 2456.78 ms. Allocated memory was 206.0 MB in the beginning and 249.0 MB in the end (delta: 43.0 MB). Free memory was 140.9 MB in the beginning and 191.0 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 13:58:52,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.56 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 166.4 MB in the end (delta: -65.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.32 ms. Allocated memory is still 206.0 MB. Free memory was 166.4 MB in the beginning and 164.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.61 ms. Allocated memory is still 206.0 MB. Free memory was 164.5 MB in the beginning and 163.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.92 ms. Allocated memory is still 206.0 MB. Free memory was 162.6 MB in the beginning and 141.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2456.78 ms. Allocated memory was 206.0 MB in the beginning and 249.0 MB in the end (delta: 43.0 MB). Free memory was 140.9 MB in the beginning and 191.0 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 62 ProgramPointsBefore, 35 ProgramPointsAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 1006 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4373 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: 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, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 373 SDtfs, 150 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, 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, 7 MinimizatonAttempts, 281 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...