/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:47:17,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:47:17,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:47:17,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:47:17,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:47:17,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:47:17,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:47:17,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:47:17,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:47:17,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:47:17,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:47:17,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:47:17,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:47:17,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:47:17,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:47:17,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:47:17,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:47:17,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:47:17,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:47:17,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:47:17,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:47:17,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:47:17,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:47:17,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:47:17,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:47:17,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:47:17,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:47:17,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:47:17,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:47:17,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:47:17,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:47:17,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:47:17,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:47:17,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:47:17,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:47:17,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:47:17,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:47:17,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:47:17,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:47:17,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:47:17,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:47:17,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:47:17,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:47:17,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:47:17,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:47:17,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:47:17,864 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:47:17,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:47:17,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:47:17,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:47:17,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:47:17,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:47:17,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:47:17,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:47:17,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:47:17,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:47:17,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:47:17,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:47:17,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:47:17,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:47:17,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:47:17,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:47:17,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:47:17,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:47:17,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:47:17,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:47:17,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:47:17,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:47:17,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:47:17,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:47:17,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:47:17,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:47:18,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:47:18,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:47:18,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:47:18,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:47:18,363 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:47:18,364 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-14 22:47:18,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1e3eb88b/120804964f52448aa29669e7b24bdba7/FLAGf99731172 [2020-09-14 22:47:19,127 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:47:19,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-14 22:47:19,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1e3eb88b/120804964f52448aa29669e7b24bdba7/FLAGf99731172 [2020-09-14 22:47:19,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1e3eb88b/120804964f52448aa29669e7b24bdba7 [2020-09-14 22:47:19,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:47:19,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:47:19,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:47:19,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:47:19,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:47:19,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:47:19" (1/1) ... [2020-09-14 22:47:19,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c79054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:19, skipping insertion in model container [2020-09-14 22:47:19,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:47:19" (1/1) ... [2020-09-14 22:47:19,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:47:19,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:47:20,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:47:20,074 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:47:20,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:47:20,236 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:47:20,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20 WrapperNode [2020-09-14 22:47:20,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:47:20,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:47:20,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:47:20,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:47:20,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:47:20,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:47:20,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:47:20,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:47:20,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... [2020-09-14 22:47:20,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:47:20,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:47:20,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:47:20,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:47:20,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:47:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:47:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:47:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:47:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:47:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:47:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:47:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:47:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:47:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:47:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:47:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-14 22:47:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-14 22:47:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:47:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:47:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:47:20,427 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:47:20,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:47:20,858 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:47:20,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:47:20 BoogieIcfgContainer [2020-09-14 22:47:20,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:47:20,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:47:20,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:47:20,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:47:20,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:47:19" (1/3) ... [2020-09-14 22:47:20,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3782ec6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:47:20, skipping insertion in model container [2020-09-14 22:47:20,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:47:20" (2/3) ... [2020-09-14 22:47:20,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3782ec6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:47:20, skipping insertion in model container [2020-09-14 22:47:20,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:47:20" (3/3) ... [2020-09-14 22:47:20,881 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-09-14 22:47:20,893 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:47:20,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:47:20,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:47:20,907 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:47:20,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,938 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,938 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,939 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,941 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,943 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,943 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,943 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,944 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,944 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,944 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,949 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,950 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,950 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,950 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,968 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:47:20,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-14 22:47:21,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:47:21,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:47:21,031 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:47:21,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:47:21,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:47:21,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:47:21,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:47:21,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:47:21,060 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:21,062 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:21,127 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-14 22:47:21,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:47:21,134 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. [2020-09-14 22:47:21,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-14 22:47:21,162 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-14 22:47:21,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:47:21,163 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. [2020-09-14 22:47:21,166 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-14 22:47:21,172 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:47:22,847 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-14 22:47:22,931 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-14 22:47:22,931 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-14 22:47:22,936 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-14 22:47:22,997 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-14 22:47:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-14 22:47:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:47:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:23,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:23,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-14 22:47:23,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:23,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577244719] [2020-09-14 22:47:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:23,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577244719] [2020-09-14 22:47:23,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:23,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:23,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717364115] [2020-09-14 22:47:23,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 22:47:23,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:23,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 22:47:23,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 22:47:23,282 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-14 22:47:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:23,347 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-14 22:47:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 22:47:23,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-14 22:47:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:23,384 INFO L225 Difference]: With dead ends: 850 [2020-09-14 22:47:23,385 INFO L226 Difference]: Without dead ends: 706 [2020-09-14 22:47:23,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 22:47:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-14 22:47:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-14 22:47:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-14 22:47:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-14 22:47:23,506 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-14 22:47:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:23,507 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-14 22:47:23,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 22:47:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-14 22:47:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:47:23,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:23,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:23,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:47:23,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-14 22:47:23,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:23,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324119421] [2020-09-14 22:47:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:23,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324119421] [2020-09-14 22:47:23,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:23,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:23,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048945719] [2020-09-14 22:47:23,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:23,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:23,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:23,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:23,688 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-14 22:47:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:23,785 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-14 22:47:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:23,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:47:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:23,792 INFO L225 Difference]: With dead ends: 802 [2020-09-14 22:47:23,793 INFO L226 Difference]: Without dead ends: 658 [2020-09-14 22:47:23,794 INFO L675 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 [2020-09-14 22:47:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-14 22:47:23,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-14 22:47:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-14 22:47:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-14 22:47:23,829 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-14 22:47:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:23,829 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-14 22:47:23,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-14 22:47:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:47:23,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:23,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:23,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:47:23,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-14 22:47:23,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:23,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658260153] [2020-09-14 22:47:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:23,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658260153] [2020-09-14 22:47:23,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:23,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:23,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069275777] [2020-09-14 22:47:23,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:23,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:23,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:23,938 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-14 22:47:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:23,980 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-14 22:47:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:23,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:47:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:23,987 INFO L225 Difference]: With dead ends: 718 [2020-09-14 22:47:23,987 INFO L226 Difference]: Without dead ends: 598 [2020-09-14 22:47:23,987 INFO L675 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 [2020-09-14 22:47:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-14 22:47:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-14 22:47:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-14 22:47:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-14 22:47:24,011 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-14 22:47:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,012 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-14 22:47:24,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-14 22:47:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:47:24,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:47:24,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-14 22:47:24,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933944030] [2020-09-14 22:47:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933944030] [2020-09-14 22:47:24,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:24,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:47:24,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804100888] [2020-09-14 22:47:24,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:24,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:24,109 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-14 22:47:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:24,146 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-09-14 22:47:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:24,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 22:47:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:24,151 INFO L225 Difference]: With dead ends: 634 [2020-09-14 22:47:24,152 INFO L226 Difference]: Without dead ends: 562 [2020-09-14 22:47:24,153 INFO L675 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 [2020-09-14 22:47:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-09-14 22:47:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-09-14 22:47:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-14 22:47:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-09-14 22:47:24,177 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-09-14 22:47:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,178 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-09-14 22:47:24,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-09-14 22:47:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:47:24,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:47:24,180 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-09-14 22:47:24,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280596112] [2020-09-14 22:47:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:24,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280596112] [2020-09-14 22:47:24,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:24,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:24,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374308875] [2020-09-14 22:47:24,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:24,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:24,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:24,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:24,339 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-09-14 22:47:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:24,431 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-09-14 22:47:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:47:24,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 22:47:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:24,437 INFO L225 Difference]: With dead ends: 834 [2020-09-14 22:47:24,437 INFO L226 Difference]: Without dead ends: 450 [2020-09-14 22:47:24,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-14 22:47:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-14 22:47:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-09-14 22:47:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-14 22:47:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-09-14 22:47:24,456 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-09-14 22:47:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,456 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-09-14 22:47:24,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-09-14 22:47:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:24,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:47:24,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,460 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-09-14 22:47:24,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110591502] [2020-09-14 22:47:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:24,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110591502] [2020-09-14 22:47:24,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:47:24,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417390755] [2020-09-14 22:47:24,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:24,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:24,562 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-09-14 22:47:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:24,643 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-09-14 22:47:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-14 22:47:24,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:47:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:24,647 INFO L225 Difference]: With dead ends: 834 [2020-09-14 22:47:24,648 INFO L226 Difference]: Without dead ends: 410 [2020-09-14 22:47:24,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-14 22:47:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-14 22:47:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-09-14 22:47:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-14 22:47:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-09-14 22:47:24,662 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-09-14 22:47:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,663 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-09-14 22:47:24,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-09-14 22:47:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:24,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:47:24,665 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-09-14 22:47:24,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079819514] [2020-09-14 22:47:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:24,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079819514] [2020-09-14 22:47:24,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:24,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:24,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326736586] [2020-09-14 22:47:24,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:24,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:24,724 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-09-14 22:47:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:24,785 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-09-14 22:47:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:24,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-14 22:47:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:24,788 INFO L225 Difference]: With dead ends: 494 [2020-09-14 22:47:24,789 INFO L226 Difference]: Without dead ends: 370 [2020-09-14 22:47:24,789 INFO L675 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 [2020-09-14 22:47:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-09-14 22:47:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-09-14 22:47:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-14 22:47:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-09-14 22:47:24,802 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-09-14 22:47:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,803 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-09-14 22:47:24,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-09-14 22:47:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:24,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:47:24,805 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,805 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-09-14 22:47:24,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527333966] [2020-09-14 22:47:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:24,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527333966] [2020-09-14 22:47:24,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:24,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:24,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345748379] [2020-09-14 22:47:24,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:24,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:24,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:24,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:24,878 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-09-14 22:47:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:24,917 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-09-14 22:47:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:24,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:47:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:24,920 INFO L225 Difference]: With dead ends: 454 [2020-09-14 22:47:24,920 INFO L226 Difference]: Without dead ends: 238 [2020-09-14 22:47:24,920 INFO L675 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 [2020-09-14 22:47:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-14 22:47:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-09-14 22:47:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-14 22:47:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-09-14 22:47:24,930 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-09-14 22:47:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:24,930 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-09-14 22:47:24,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-09-14 22:47:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:47:24,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:24,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:24,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:47:24,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:24,932 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-14 22:47:24,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:24,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396538988] [2020-09-14 22:47:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:25,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396538988] [2020-09-14 22:47:25,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:25,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:47:25,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036607446] [2020-09-14 22:47:25,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:47:25,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:47:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:47:25,014 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-09-14 22:47:25,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:25,055 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-09-14 22:47:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:47:25,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-14 22:47:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:25,057 INFO L225 Difference]: With dead ends: 283 [2020-09-14 22:47:25,058 INFO L226 Difference]: Without dead ends: 214 [2020-09-14 22:47:25,058 INFO L675 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 [2020-09-14 22:47:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-14 22:47:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-14 22:47:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-14 22:47:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-09-14 22:47:25,067 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-09-14 22:47:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:25,067 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-09-14 22:47:25,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:47:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-09-14 22:47:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:47:25,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:25,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:25,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:47:25,069 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:25,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:25,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-14 22:47:25,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:25,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893350788] [2020-09-14 22:47:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:25,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893350788] [2020-09-14 22:47:25,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:25,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:47:25,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516789555] [2020-09-14 22:47:25,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:25,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:25,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:25,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:25,153 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-09-14 22:47:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:25,203 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-09-14 22:47:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:47:25,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-14 22:47:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:25,205 INFO L225 Difference]: With dead ends: 211 [2020-09-14 22:47:25,205 INFO L226 Difference]: Without dead ends: 158 [2020-09-14 22:47:25,205 INFO L675 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 [2020-09-14 22:47:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-14 22:47:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-14 22:47:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-14 22:47:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-09-14 22:47:25,211 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-09-14 22:47:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:25,212 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-09-14 22:47:25,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-09-14 22:47:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 22:47:25,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:25,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:25,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:47:25,213 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:25,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-14 22:47:25,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:25,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992341924] [2020-09-14 22:47:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:25,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992341924] [2020-09-14 22:47:25,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:25,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:47:25,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115986492] [2020-09-14 22:47:25,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:47:25,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:25,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:47:25,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:47:25,300 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-09-14 22:47:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:25,368 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-09-14 22:47:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:47:25,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-14 22:47:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:25,370 INFO L225 Difference]: With dead ends: 134 [2020-09-14 22:47:25,370 INFO L226 Difference]: Without dead ends: 95 [2020-09-14 22:47:25,371 INFO L675 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 [2020-09-14 22:47:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-14 22:47:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-14 22:47:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-14 22:47:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-09-14 22:47:25,375 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-09-14 22:47:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:25,376 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-09-14 22:47:25,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:47:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-09-14 22:47:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-14 22:47:25,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:25,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:25,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-14 22:47:25,378 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:25,378 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-14 22:47:25,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:25,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687289653] [2020-09-14 22:47:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:25,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687289653] [2020-09-14 22:47:25,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:25,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:47:25,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854277464] [2020-09-14 22:47:25,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:47:25,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:25,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:47:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:47:25,452 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-09-14 22:47:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:25,488 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-09-14 22:47:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:47:25,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-14 22:47:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:25,490 INFO L225 Difference]: With dead ends: 109 [2020-09-14 22:47:25,490 INFO L226 Difference]: Without dead ends: 93 [2020-09-14 22:47:25,491 INFO L675 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 [2020-09-14 22:47:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-14 22:47:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-09-14 22:47:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-14 22:47:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-09-14 22:47:25,495 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-09-14 22:47:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:25,495 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-09-14 22:47:25,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:47:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-09-14 22:47:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-14 22:47:25,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:47:25,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:47:25,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-14 22:47:25,497 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:47:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:47:25,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-14 22:47:25,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:47:25,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690161979] [2020-09-14 22:47:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:47:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:47:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:47:25,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690161979] [2020-09-14 22:47:25,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:47:25,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-14 22:47:25,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122076208] [2020-09-14 22:47:25,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-14 22:47:25,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:47:25,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-14 22:47:25,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:47:25,598 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-09-14 22:47:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:47:25,643 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-09-14 22:47:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:47:25,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-14 22:47:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:47:25,644 INFO L225 Difference]: With dead ends: 81 [2020-09-14 22:47:25,644 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:47:25,644 INFO L675 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 [2020-09-14 22:47:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:47:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:47:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:47:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:47:25,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-14 22:47:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:47:25,646 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:47:25,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-14 22:47:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:47:25,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:47:25,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-14 22:47:25,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:47:25 BasicIcfg [2020-09-14 22:47:25,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:47:25,654 INFO L168 Benchmark]: Toolchain (without parser) took 6254.47 ms. Allocated memory was 140.5 MB in the beginning and 287.3 MB in the end (delta: 146.8 MB). Free memory was 101.9 MB in the beginning and 128.5 MB in the end (delta: -26.6 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,655 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.94 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 160.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.95 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,657 INFO L168 Benchmark]: Boogie Preprocessor took 35.49 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,658 INFO L168 Benchmark]: RCFGBuilder took 535.62 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 132.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,659 INFO L168 Benchmark]: TraceAbstraction took 4781.01 ms. Allocated memory was 203.9 MB in the beginning and 287.3 MB in the end (delta: 83.4 MB). Free memory was 132.5 MB in the beginning and 128.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:47:25,663 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 831.94 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 160.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.95 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.49 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.62 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 132.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4781.01 ms. Allocated memory was 203.9 MB in the beginning and 287.3 MB in the end (delta: 83.4 MB). Free memory was 132.5 MB in the beginning and 128.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 347 SDtfs, 346 SDslu, 602 SDs, 0 SdLazy, 217 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 7404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...