/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:33,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:33,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:33,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:33,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:33,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:33,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:33,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:33,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:33,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:33,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:33,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:33,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:33,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:33,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:33,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:33,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:33,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:33,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:33,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:33,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:33,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:33,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:33,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:33,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:33,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:33,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:33,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:33,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:33,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:33,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:33,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:33,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:33,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:33,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:33,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:33,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:33,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:33,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:33,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:33,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:33,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:24:33,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:33,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:33,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:33,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:33,869 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:33,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:33,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:33,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:33,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:33,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:33,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:33,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:33,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:33,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:33,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:33,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:33,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:33,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:33,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:33,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:33,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:33,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:33,874 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:33,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:33,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:34,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:34,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:34,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:34,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:34,196 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:34,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 02:24:34,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24809dd4/49d3138dae134bc6b61cde6707b52036/FLAG66c482e14 [2020-04-18 02:24:34,835 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:34,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 02:24:34,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24809dd4/49d3138dae134bc6b61cde6707b52036/FLAG66c482e14 [2020-04-18 02:24:35,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24809dd4/49d3138dae134bc6b61cde6707b52036 [2020-04-18 02:24:35,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:35,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:35,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:35,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:35,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:35,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:35,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35, skipping insertion in model container [2020-04-18 02:24:35,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:35,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:35,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:35,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:35,790 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:35,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:35,942 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35 WrapperNode [2020-04-18 02:24:35,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:35,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:35,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:35,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:35,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:35,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:35,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:35,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:35,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:35,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:36,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (1/1) ... [2020-04-18 02:24:36,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:36,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:36,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:36,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:36,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (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 [2020-04-18 02:24:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:36,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:24:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:24:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:36,129 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:24:36,557 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:36,558 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:36,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:36 BoogieIcfgContainer [2020-04-18 02:24:36,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:36,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:36,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:36,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:35" (1/3) ... [2020-04-18 02:24:36,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49465f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:36, skipping insertion in model container [2020-04-18 02:24:36,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:35" (2/3) ... [2020-04-18 02:24:36,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49465f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:36, skipping insertion in model container [2020-04-18 02:24:36,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:36" (3/3) ... [2020-04-18 02:24:36,576 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-04-18 02:24:36,589 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:36,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:36,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:36,601 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:36,639 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,639 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,639 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,640 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,640 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,641 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,641 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,642 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,642 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,643 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,643 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,644 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,644 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,644 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,645 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,645 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,645 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,646 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,646 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,650 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,651 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,651 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,651 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,657 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,657 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,657 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,658 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,660 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,660 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,660 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,660 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,662 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,663 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,663 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:36,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:24:36,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:36,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:36,699 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:36,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:36,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:36,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:36,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:36,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:36,716 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:36,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:36,768 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:36,769 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:36,776 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. [2020-04-18 02:24:36,781 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:36,808 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:36,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:36,809 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. [2020-04-18 02:24:36,813 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 02:24:36,814 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:38,344 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:24:38,432 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 02:24:38,432 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 02:24:38,437 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 02:24:38,520 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 02:24:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 02:24:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:38,544 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:38,545 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:38,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 02:24:38,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:38,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503605667] [2020-04-18 02:24:38,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:38,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503605667] [2020-04-18 02:24:38,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:38,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:38,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159343837] [2020-04-18 02:24:38,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:24:38,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:24:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:38,792 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 02:24:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:38,841 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 02:24:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:24:38,842 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:24:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:38,871 INFO L225 Difference]: With dead ends: 850 [2020-04-18 02:24:38,871 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 02:24:38,873 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 [2020-04-18 02:24:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 02:24:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 02:24:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 02:24:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 02:24:39,018 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 02:24:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,020 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 02:24:39,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:24:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 02:24:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:39,024 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,025 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 02:24:39,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485994882] [2020-04-18 02:24:39,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485994882] [2020-04-18 02:24:39,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:39,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481737369] [2020-04-18 02:24:39,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,196 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 02:24:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:39,253 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-04-18 02:24:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:39,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:24:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:39,260 INFO L225 Difference]: With dead ends: 802 [2020-04-18 02:24:39,260 INFO L226 Difference]: Without dead ends: 658 [2020-04-18 02:24:39,261 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 [2020-04-18 02:24:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-04-18 02:24:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-04-18 02:24:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-04-18 02:24:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-04-18 02:24:39,292 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-04-18 02:24:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,292 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-04-18 02:24:39,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-04-18 02:24:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:39,295 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,295 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-04-18 02:24:39,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687627778] [2020-04-18 02:24:39,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687627778] [2020-04-18 02:24:39,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:39,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396026078] [2020-04-18 02:24:39,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,370 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-04-18 02:24:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:39,413 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-04-18 02:24:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:39,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:39,419 INFO L225 Difference]: With dead ends: 738 [2020-04-18 02:24:39,419 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 02:24:39,420 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 [2020-04-18 02:24:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 02:24:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-04-18 02:24:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-04-18 02:24:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-04-18 02:24:39,444 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-04-18 02:24:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,444 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-04-18 02:24:39,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-04-18 02:24:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:39,446 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,446 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-04-18 02:24:39,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 02:24:39,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 02:24:39,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:39,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211260988] [2020-04-18 02:24:39,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,534 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-04-18 02:24:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:39,562 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-04-18 02:24:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:39,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:24:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:39,567 INFO L225 Difference]: With dead ends: 658 [2020-04-18 02:24:39,568 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 02:24:39,568 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 [2020-04-18 02:24:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 02:24:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 02:24:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 02:24:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 02:24:39,591 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 02:24:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,592 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 02:24:39,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 02:24:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:39,593 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,594 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,594 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-18 02:24:39,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082267217] [2020-04-18 02:24:39,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082267217] [2020-04-18 02:24:39,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:39,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729618443] [2020-04-18 02:24:39,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,676 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-18 02:24:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:39,707 INFO L93 Difference]: Finished difference Result 610 states and 1962 transitions. [2020-04-18 02:24:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:39,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:39,712 INFO L225 Difference]: With dead ends: 610 [2020-04-18 02:24:39,712 INFO L226 Difference]: Without dead ends: 546 [2020-04-18 02:24:39,712 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 [2020-04-18 02:24:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-18 02:24:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2020-04-18 02:24:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-04-18 02:24:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1786 transitions. [2020-04-18 02:24:39,759 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1786 transitions. Word has length 14 [2020-04-18 02:24:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,759 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 1786 transitions. [2020-04-18 02:24:39,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1786 transitions. [2020-04-18 02:24:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:39,761 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,761 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-18 02:24:39,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482336660] [2020-04-18 02:24:39,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482336660] [2020-04-18 02:24:39,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:39,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458358103] [2020-04-18 02:24:39,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,819 INFO L87 Difference]: Start difference. First operand 546 states and 1786 transitions. Second operand 4 states. [2020-04-18 02:24:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:39,879 INFO L93 Difference]: Finished difference Result 794 states and 2462 transitions. [2020-04-18 02:24:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:39,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:39,884 INFO L225 Difference]: With dead ends: 794 [2020-04-18 02:24:39,884 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 02:24:39,885 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 [2020-04-18 02:24:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 02:24:39,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 514. [2020-04-18 02:24:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-18 02:24:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-18 02:24:39,903 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 15 [2020-04-18 02:24:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:39,903 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-18 02:24:39,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-18 02:24:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:39,905 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:39,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:39,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:39,906 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-18 02:24:39,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:39,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374127052] [2020-04-18 02:24:39,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:39,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374127052] [2020-04-18 02:24:39,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:39,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:39,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351243752] [2020-04-18 02:24:39,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:39,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:39,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:39,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:39,973 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 4 states. [2020-04-18 02:24:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,011 INFO L93 Difference]: Finished difference Result 694 states and 2074 transitions. [2020-04-18 02:24:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:40,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,015 INFO L225 Difference]: With dead ends: 694 [2020-04-18 02:24:40,015 INFO L226 Difference]: Without dead ends: 538 [2020-04-18 02:24:40,016 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 [2020-04-18 02:24:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-04-18 02:24:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 490. [2020-04-18 02:24:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-04-18 02:24:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1462 transitions. [2020-04-18 02:24:40,035 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1462 transitions. Word has length 15 [2020-04-18 02:24:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,036 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1462 transitions. [2020-04-18 02:24:40,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1462 transitions. [2020-04-18 02:24:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:40,038 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,038 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,038 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash 659646890, now seen corresponding path program 1 times [2020-04-18 02:24:40,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423958641] [2020-04-18 02:24:40,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423958641] [2020-04-18 02:24:40,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:40,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060561621] [2020-04-18 02:24:40,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:40,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:40,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:40,136 INFO L87 Difference]: Start difference. First operand 490 states and 1462 transitions. Second operand 5 states. [2020-04-18 02:24:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,177 INFO L93 Difference]: Finished difference Result 742 states and 2164 transitions. [2020-04-18 02:24:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:40,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,182 INFO L225 Difference]: With dead ends: 742 [2020-04-18 02:24:40,182 INFO L226 Difference]: Without dead ends: 394 [2020-04-18 02:24:40,183 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 [2020-04-18 02:24:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-04-18 02:24:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-04-18 02:24:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 02:24:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-04-18 02:24:40,201 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-04-18 02:24:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,202 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-04-18 02:24:40,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-04-18 02:24:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:40,211 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,211 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 2 times [2020-04-18 02:24:40,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615684264] [2020-04-18 02:24:40,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615684264] [2020-04-18 02:24:40,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:40,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517242218] [2020-04-18 02:24:40,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:40,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:40,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:40,298 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-04-18 02:24:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,336 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-04-18 02:24:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:40,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,338 INFO L225 Difference]: With dead ends: 542 [2020-04-18 02:24:40,338 INFO L226 Difference]: Without dead ends: 254 [2020-04-18 02:24:40,339 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 [2020-04-18 02:24:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-18 02:24:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-04-18 02:24:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-18 02:24:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-04-18 02:24:40,347 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-04-18 02:24:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,347 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-04-18 02:24:40,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-04-18 02:24:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:40,348 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,348 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 3 times [2020-04-18 02:24:40,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425571829] [2020-04-18 02:24:40,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425571829] [2020-04-18 02:24:40,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:40,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494924603] [2020-04-18 02:24:40,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:40,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:40,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:40,402 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-04-18 02:24:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,442 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-04-18 02:24:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:40,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,445 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:24:40,446 INFO L226 Difference]: Without dead ends: 229 [2020-04-18 02:24:40,446 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 [2020-04-18 02:24:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-04-18 02:24:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-04-18 02:24:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-04-18 02:24:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-04-18 02:24:40,454 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-04-18 02:24:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,456 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-04-18 02:24:40,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-04-18 02:24:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:24:40,457 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,458 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,458 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 02:24:40,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664543116] [2020-04-18 02:24:40,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664543116] [2020-04-18 02:24:40,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:40,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834117233] [2020-04-18 02:24:40,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:40,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:40,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:40,511 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-04-18 02:24:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,564 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-04-18 02:24:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:40,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:24:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,566 INFO L225 Difference]: With dead ends: 227 [2020-04-18 02:24:40,566 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 02:24:40,566 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 [2020-04-18 02:24:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 02:24:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 02:24:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 02:24:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-04-18 02:24:40,572 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-04-18 02:24:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,573 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-04-18 02:24:40,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-04-18 02:24:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:24:40,573 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,574 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,574 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 02:24:40,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293675279] [2020-04-18 02:24:40,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293675279] [2020-04-18 02:24:40,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:24:40,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682671998] [2020-04-18 02:24:40,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:40,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:40,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:40,633 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-04-18 02:24:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,696 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-04-18 02:24:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:40,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:24:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,697 INFO L225 Difference]: With dead ends: 147 [2020-04-18 02:24:40,697 INFO L226 Difference]: Without dead ends: 107 [2020-04-18 02:24:40,698 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 [2020-04-18 02:24:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-04-18 02:24:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-04-18 02:24:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-04-18 02:24:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-04-18 02:24:40,702 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-04-18 02:24:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,702 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-04-18 02:24:40,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-04-18 02:24:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:40,703 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,717 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,717 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,718 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-18 02:24:40,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714377270] [2020-04-18 02:24:40,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714377270] [2020-04-18 02:24:40,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:40,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055713443] [2020-04-18 02:24:40,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:40,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:40,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:40,776 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-04-18 02:24:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,813 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-04-18 02:24:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:40,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-18 02:24:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,814 INFO L225 Difference]: With dead ends: 121 [2020-04-18 02:24:40,814 INFO L226 Difference]: Without dead ends: 105 [2020-04-18 02:24:40,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-04-18 02:24:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-04-18 02:24:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-04-18 02:24:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-04-18 02:24:40,819 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-04-18 02:24:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,819 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-04-18 02:24:40,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-04-18 02:24:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:40,820 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:40,820 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:40,821 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-18 02:24:40,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:40,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013010927] [2020-04-18 02:24:40,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:40,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013010927] [2020-04-18 02:24:40,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:40,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 02:24:40,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245503404] [2020-04-18 02:24:40,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 02:24:40,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:40,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 02:24:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:40,886 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-04-18 02:24:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:40,931 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-04-18 02:24:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:40,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 02:24:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:40,932 INFO L225 Difference]: With dead ends: 93 [2020-04-18 02:24:40,932 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:40,932 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 [2020-04-18 02:24:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:40,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 02:24:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:40,935 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:40,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 02:24:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:40,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:40,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:40 BasicIcfg [2020-04-18 02:24:40,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:40,942 INFO L168 Benchmark]: Toolchain (without parser) took 5798.19 ms. Allocated memory was 143.1 MB in the beginning and 296.7 MB in the end (delta: 153.6 MB). Free memory was 99.3 MB in the beginning and 230.4 MB in the end (delta: -131.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,943 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.42 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 157.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.06 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,952 INFO L168 Benchmark]: Boogie Preprocessor took 28.62 ms. Allocated memory is still 200.8 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,953 INFO L168 Benchmark]: RCFGBuilder took 535.04 ms. Allocated memory is still 200.8 MB. Free memory was 153.2 MB in the beginning and 129.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:40,954 INFO L168 Benchmark]: TraceAbstraction took 4375.72 ms. Allocated memory was 200.8 MB in the beginning and 296.7 MB in the end (delta: 95.9 MB). Free memory was 129.0 MB in the beginning and 230.4 MB in the end (delta: -101.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:24:40,965 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 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.42 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 157.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.06 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.62 ms. Allocated memory is still 200.8 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.04 ms. Allocated memory is still 200.8 MB. Free memory was 153.2 MB in the beginning and 129.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4375.72 ms. Allocated memory was 200.8 MB in the beginning and 296.7 MB in the end (delta: 95.9 MB). Free memory was 129.0 MB in the beginning and 230.4 MB in the end (delta: -101.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 4.2s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 374 SDtfs, 324 SDslu, 598 SDs, 0 SdLazy, 224 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s 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, 14 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 7908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...