/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:51:46,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:51:46,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:51:46,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:51:46,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:51:46,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:51:46,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:51:46,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:51:46,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:51:46,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:51:46,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:51:46,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:51:46,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:51:46,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:51:46,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:51:46,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:51:46,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:51:46,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:51:46,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:51:46,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:51:46,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:51:46,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:51:46,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:51:46,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:51:46,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:51:46,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:51:46,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:51:46,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:51:46,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:51:46,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:51:46,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:51:46,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:51:46,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:51:46,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:51:46,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:51:46,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:51:46,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:51:46,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:51:46,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:51:46,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:51:46,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:51:46,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:51:46,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:51:46,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:51:46,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:51:46,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:51:46,825 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:51:46,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:51:46,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:51:46,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:51:46,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:51:46,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:51:46,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:51:46,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:51:46,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:51:46,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:51:46,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:51:46,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:51:46,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:51:46,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:51:46,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:51:46,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:51:46,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:51:46,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:51:46,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:51:46,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:51:46,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:51:46,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:51:46,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:51:46,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:51:46,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:51:46,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:51:47,114 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:51:47,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:51:47,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:51:47,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:51:47,134 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:51:47,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-17 17:51:47,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c827e081/6fbe6a3c4c1e426e8142625349451a79/FLAG7bc485b16 [2020-04-17 17:51:47,772 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:51:47,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-17 17:51:47,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c827e081/6fbe6a3c4c1e426e8142625349451a79/FLAG7bc485b16 [2020-04-17 17:51:48,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c827e081/6fbe6a3c4c1e426e8142625349451a79 [2020-04-17 17:51:48,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:51:48,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:51:48,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:51:48,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:51:48,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:51:48,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e69f865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48, skipping insertion in model container [2020-04-17 17:51:48,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:51:48,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:51:48,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:51:48,600 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:51:48,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:51:48,743 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:51:48,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48 WrapperNode [2020-04-17 17:51:48,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:51:48,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:51:48,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:51:48,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:51:48,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:51:48,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:51:48,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:51:48,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:51:48,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... [2020-04-17 17:51:48,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:51:48,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:51:48,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:51:48,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:51:48,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:51:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:51:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:51:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:51:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:51:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:51:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:51:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:51:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:51:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:51:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:51:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 17:51:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 17:51:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:51:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:51:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:51:48,889 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:51:49,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:51:49,277 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:51:49,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:51:49 BoogieIcfgContainer [2020-04-17 17:51:49,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:51:49,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:51:49,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:51:49,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:51:49,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:51:48" (1/3) ... [2020-04-17 17:51:49,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2a3ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:51:49, skipping insertion in model container [2020-04-17 17:51:49,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:51:48" (2/3) ... [2020-04-17 17:51:49,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2a3ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:51:49, skipping insertion in model container [2020-04-17 17:51:49,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:51:49" (3/3) ... [2020-04-17 17:51:49,290 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-04-17 17:51:49,300 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:51:49,300 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:51:49,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:51:49,307 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:51:49,335 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,335 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,336 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,336 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,337 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,337 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,337 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,338 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,338 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,339 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,339 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,339 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,340 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,340 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,340 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,341 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,341 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,341 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,342 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,342 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,342 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,343 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,347 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,347 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,348 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,348 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,354 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,354 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,354 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,355 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,358 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,358 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,358 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,358 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,362 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,362 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,362 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,362 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:51:49,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 17:51:49,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:51:49,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:51:49,399 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:51:49,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:51:49,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:51:49,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:51:49,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:51:49,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:51:49,416 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-17 17:51:49,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 17:51:49,486 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 17:51:49,487 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:51:49,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 17:51:49,502 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 17:51:49,544 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 17:51:49,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:51:49,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 17:51:49,550 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 17:51:49,551 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:51:51,338 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-17 17:51:51,338 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-17 17:51:51,350 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 17:51:51,430 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 17:51:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 17:51:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:51:51,447 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:51,448 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:51,448 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-17 17:51:51,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:51,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503081743] [2020-04-17 17:51:51,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:51,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503081743] [2020-04-17 17:51:51,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:51,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:51,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60978647] [2020-04-17 17:51:51,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:51:51,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:51,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:51:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:51:51,692 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 17:51:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:51,741 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 17:51:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:51:51,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 17:51:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:51,769 INFO L225 Difference]: With dead ends: 850 [2020-04-17 17:51:51,769 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 17:51:51,771 INFO L678 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 [2020-04-17 17:51:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 17:51:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 17:51:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 17:51:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 17:51:51,927 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 17:51:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:51,929 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 17:51:51,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:51:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 17:51:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:51:51,935 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:51,936 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:51,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-17 17:51:51,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:51,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052952581] [2020-04-17 17:51:51,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052952581] [2020-04-17 17:51:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:52,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318709575] [2020-04-17 17:51:52,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:52,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:52,060 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 17:51:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,097 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 17:51:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:52,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:51:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,104 INFO L225 Difference]: With dead ends: 778 [2020-04-17 17:51:52,104 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 17:51:52,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 17:51:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 17:51:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 17:51:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 17:51:52,157 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 17:51:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,158 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 17:51:52,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 17:51:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:51:52,163 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,163 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-17 17:51:52,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505158779] [2020-04-17 17:51:52,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505158779] [2020-04-17 17:51:52,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:52,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966281957] [2020-04-17 17:51:52,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:52,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:52,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:52,301 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 17:51:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,344 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-17 17:51:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:52,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:51:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,350 INFO L225 Difference]: With dead ends: 718 [2020-04-17 17:51:52,350 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 17:51:52,350 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 17:51:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-17 17:51:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-17 17:51:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-17 17:51:52,373 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-17 17:51:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,373 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-17 17:51:52,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-17 17:51:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:51:52,375 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,375 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-17 17:51:52,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951044256] [2020-04-17 17:51:52,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951044256] [2020-04-17 17:51:52,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:52,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733067029] [2020-04-17 17:51:52,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:52,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:52,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:52,434 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-17 17:51:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,460 INFO L93 Difference]: Finished difference Result 658 states and 2134 transitions. [2020-04-17 17:51:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:52,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:51:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,465 INFO L225 Difference]: With dead ends: 658 [2020-04-17 17:51:52,465 INFO L226 Difference]: Without dead ends: 562 [2020-04-17 17:51:52,465 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-04-17 17:51:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-04-17 17:51:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-04-17 17:51:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-04-17 17:51:52,485 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-04-17 17:51:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,486 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-04-17 17:51:52,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-04-17 17:51:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:51:52,487 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,487 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,487 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-04-17 17:51:52,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754771341] [2020-04-17 17:51:52,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754771341] [2020-04-17 17:51:52,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:51:52,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181196763] [2020-04-17 17:51:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:52,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,569 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-04-17 17:51:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,642 INFO L93 Difference]: Finished difference Result 1154 states and 3580 transitions. [2020-04-17 17:51:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 17:51:52,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 17:51:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,647 INFO L225 Difference]: With dead ends: 1154 [2020-04-17 17:51:52,648 INFO L226 Difference]: Without dead ends: 598 [2020-04-17 17:51:52,648 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 17:51:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-04-17 17:51:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 526. [2020-04-17 17:51:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-17 17:51:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1632 transitions. [2020-04-17 17:51:52,667 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1632 transitions. Word has length 14 [2020-04-17 17:51:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,667 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1632 transitions. [2020-04-17 17:51:52,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1632 transitions. [2020-04-17 17:51:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:51:52,669 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,669 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,669 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash 437909136, now seen corresponding path program 1 times [2020-04-17 17:51:52,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603803353] [2020-04-17 17:51:52,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603803353] [2020-04-17 17:51:52,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:51:52,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824427087] [2020-04-17 17:51:52,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:52,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:52,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:52,739 INFO L87 Difference]: Start difference. First operand 526 states and 1632 transitions. Second operand 4 states. [2020-04-17 17:51:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,772 INFO L93 Difference]: Finished difference Result 568 states and 1723 transitions. [2020-04-17 17:51:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:52,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:51:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,776 INFO L225 Difference]: With dead ends: 568 [2020-04-17 17:51:52,776 INFO L226 Difference]: Without dead ends: 514 [2020-04-17 17:51:52,777 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-04-17 17:51:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-04-17 17:51:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-17 17:51:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1582 transitions. [2020-04-17 17:51:52,794 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1582 transitions. Word has length 14 [2020-04-17 17:51:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,795 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1582 transitions. [2020-04-17 17:51:52,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1582 transitions. [2020-04-17 17:51:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:52,797 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,797 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,797 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-17 17:51:52,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803996629] [2020-04-17 17:51:52,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:52,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803996629] [2020-04-17 17:51:52,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:52,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:52,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974934314] [2020-04-17 17:51:52,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:52,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:52,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:52,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:52,869 INFO L87 Difference]: Start difference. First operand 514 states and 1582 transitions. Second operand 5 states. [2020-04-17 17:51:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:52,928 INFO L93 Difference]: Finished difference Result 778 states and 2356 transitions. [2020-04-17 17:51:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:52,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:51:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:52,934 INFO L225 Difference]: With dead ends: 778 [2020-04-17 17:51:52,934 INFO L226 Difference]: Without dead ends: 418 [2020-04-17 17:51:52,936 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:51:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-17 17:51:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-17 17:51:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-17 17:51:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1268 transitions. [2020-04-17 17:51:52,953 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1268 transitions. Word has length 15 [2020-04-17 17:51:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:52,953 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1268 transitions. [2020-04-17 17:51:52,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1268 transitions. [2020-04-17 17:51:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:52,956 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:52,956 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:52,956 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 2 times [2020-04-17 17:51:52,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:52,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295936960] [2020-04-17 17:51:52,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295936960] [2020-04-17 17:51:53,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:51:53,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574351827] [2020-04-17 17:51:53,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:53,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:53,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:53,014 INFO L87 Difference]: Start difference. First operand 418 states and 1268 transitions. Second operand 5 states. [2020-04-17 17:51:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,124 INFO L93 Difference]: Finished difference Result 766 states and 2220 transitions. [2020-04-17 17:51:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 17:51:53,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:51:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,127 INFO L225 Difference]: With dead ends: 766 [2020-04-17 17:51:53,127 INFO L226 Difference]: Without dead ends: 370 [2020-04-17 17:51:53,127 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 17:51:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-04-17 17:51:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-04-17 17:51:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-04-17 17:51:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 902 transitions. [2020-04-17 17:51:53,139 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 902 transitions. Word has length 15 [2020-04-17 17:51:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,139 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 902 transitions. [2020-04-17 17:51:53,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 902 transitions. [2020-04-17 17:51:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:53,141 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:53,141 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:53,141 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-17 17:51:53,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:53,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322624664] [2020-04-17 17:51:53,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322624664] [2020-04-17 17:51:53,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:53,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666846436] [2020-04-17 17:51:53,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:53,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:53,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:53,247 INFO L87 Difference]: Start difference. First operand 322 states and 902 transitions. Second operand 5 states. [2020-04-17 17:51:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,290 INFO L93 Difference]: Finished difference Result 446 states and 1208 transitions. [2020-04-17 17:51:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:53,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:51:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,292 INFO L225 Difference]: With dead ends: 446 [2020-04-17 17:51:53,292 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 17:51:53,293 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:51:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 17:51:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 17:51:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 17:51:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 611 transitions. [2020-04-17 17:51:53,301 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 611 transitions. Word has length 15 [2020-04-17 17:51:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,301 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 611 transitions. [2020-04-17 17:51:53,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 611 transitions. [2020-04-17 17:51:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:51:53,302 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:53,302 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:53,303 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:53,303 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-17 17:51:53,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:53,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211189486] [2020-04-17 17:51:53,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211189486] [2020-04-17 17:51:53,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:51:53,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029449266] [2020-04-17 17:51:53,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:51:53,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:51:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:51:53,340 INFO L87 Difference]: Start difference. First operand 230 states and 611 transitions. Second operand 4 states. [2020-04-17 17:51:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,374 INFO L93 Difference]: Finished difference Result 272 states and 660 transitions. [2020-04-17 17:51:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:51:53,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 17:51:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,376 INFO L225 Difference]: With dead ends: 272 [2020-04-17 17:51:53,376 INFO L226 Difference]: Without dead ends: 207 [2020-04-17 17:51:53,377 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-04-17 17:51:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-04-17 17:51:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-04-17 17:51:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 511 transitions. [2020-04-17 17:51:53,384 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 511 transitions. Word has length 15 [2020-04-17 17:51:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,384 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 511 transitions. [2020-04-17 17:51:53,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:51:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 511 transitions. [2020-04-17 17:51:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:51:53,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:53,386 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:53,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:53,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-17 17:51:53,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:53,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872560752] [2020-04-17 17:51:53,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872560752] [2020-04-17 17:51:53,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:51:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340056509] [2020-04-17 17:51:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:51:53,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:51:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:51:53,429 INFO L87 Difference]: Start difference. First operand 207 states and 511 transitions. Second operand 5 states. [2020-04-17 17:51:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,468 INFO L93 Difference]: Finished difference Result 203 states and 440 transitions. [2020-04-17 17:51:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:51:53,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 17:51:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,470 INFO L225 Difference]: With dead ends: 203 [2020-04-17 17:51:53,470 INFO L226 Difference]: Without dead ends: 153 [2020-04-17 17:51:53,471 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:51:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-04-17 17:51:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-04-17 17:51:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-17 17:51:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 324 transitions. [2020-04-17 17:51:53,475 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 324 transitions. Word has length 16 [2020-04-17 17:51:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,476 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 324 transitions. [2020-04-17 17:51:53,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:51:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 324 transitions. [2020-04-17 17:51:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 17:51:53,477 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:53,477 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:53,477 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-17 17:51:53,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:53,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785107058] [2020-04-17 17:51:53,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785107058] [2020-04-17 17:51:53,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 17:51:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216998182] [2020-04-17 17:51:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:51:53,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:51:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:51:53,526 INFO L87 Difference]: Start difference. First operand 153 states and 324 transitions. Second operand 6 states. [2020-04-17 17:51:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,582 INFO L93 Difference]: Finished difference Result 129 states and 253 transitions. [2020-04-17 17:51:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:51:53,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 17:51:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,584 INFO L225 Difference]: With dead ends: 129 [2020-04-17 17:51:53,584 INFO L226 Difference]: Without dead ends: 91 [2020-04-17 17:51:53,584 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:51:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-04-17 17:51:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-04-17 17:51:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-04-17 17:51:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-04-17 17:51:53,588 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 17 [2020-04-17 17:51:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,588 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-04-17 17:51:53,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:51:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-04-17 17:51:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 17:51:53,589 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:51:53,589 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:51:53,589 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:51:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:51:53,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 1 times [2020-04-17 17:51:53,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:51:53,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463472072] [2020-04-17 17:51:53,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:51:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:51:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:51:53,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463472072] [2020-04-17 17:51:53,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:51:53,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 17:51:53,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769110075] [2020-04-17 17:51:53,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 17:51:53,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:51:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 17:51:53,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:51:53,651 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-04-17 17:51:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:51:53,698 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-04-17 17:51:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:51:53,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 17:51:53,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:51:53,700 INFO L225 Difference]: With dead ends: 81 [2020-04-17 17:51:53,700 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:51:53,700 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:51:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:51:53,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:51:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:51:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:51:53,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-17 17:51:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:51:53,702 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:51:53,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 17:51:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:51:53,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:51:53,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:51:53 BasicIcfg [2020-04-17 17:51:53,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:51:53,716 INFO L168 Benchmark]: Toolchain (without parser) took 5664.69 ms. Allocated memory was 145.2 MB in the beginning and 291.5 MB in the end (delta: 146.3 MB). Free memory was 100.8 MB in the beginning and 161.4 MB in the end (delta: -60.6 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,717 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.52 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.1 MB in the beginning and 157.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,724 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,729 INFO L168 Benchmark]: RCFGBuilder took 459.17 ms. Allocated memory is still 201.3 MB. Free memory was 154.1 MB in the beginning and 130.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,730 INFO L168 Benchmark]: TraceAbstraction took 4426.24 ms. Allocated memory was 201.3 MB in the beginning and 291.5 MB in the end (delta: 90.2 MB). Free memory was 129.5 MB in the beginning and 161.4 MB in the end (delta: -31.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:51:53,741 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.52 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.1 MB in the beginning and 157.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.17 ms. Allocated memory is still 201.3 MB. Free memory was 154.1 MB in the beginning and 130.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4426.24 ms. Allocated memory was 201.3 MB in the beginning and 291.5 MB in the end (delta: 90.2 MB). Free memory was 129.5 MB in the beginning and 161.4 MB in the end (delta: -31.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 360 SDtfs, 372 SDslu, 629 SDs, 0 SdLazy, 215 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 120 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 7135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...