/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-bf4350c [2020-09-17 00:05:00,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:05:00,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:05:00,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:05:00,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:05:00,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:05:00,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:05:00,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:05:00,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:05:00,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:05:00,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:05:00,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:05:00,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:05:00,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:05:00,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:05:00,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:05:00,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:05:00,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:05:00,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:05:00,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:05:00,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:05:00,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:05:00,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:05:00,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:05:00,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:05:00,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:05:00,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:05:00,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:05:00,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:05:00,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:05:00,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:05:00,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:05:00,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:05:00,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:05:00,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:05:00,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:05:00,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:05:00,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:05:00,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:05:00,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:05:00,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:05:00,531 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:05:00,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:05:00,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:05:00,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:05:00,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:05:00,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:05:00,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:05:00,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:05:00,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:05:00,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:05:00,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:05:00,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:05:00,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:05:00,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:05:00,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:05:00,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:05:00,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:05:00,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:05:00,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:05:00,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:05:00,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:05:00,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:05:00,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:05:00,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:05:00,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:05:00,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:05:00,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:05:01,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:05:01,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:05:01,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:05:01,014 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:05:01,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-17 00:05:01,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9526f62/e9203d7a175f4feab756b6c3af98a9fa/FLAG46ed088c3 [2020-09-17 00:05:01,786 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:05:01,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-17 00:05:01,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9526f62/e9203d7a175f4feab756b6c3af98a9fa/FLAG46ed088c3 [2020-09-17 00:05:01,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9526f62/e9203d7a175f4feab756b6c3af98a9fa [2020-09-17 00:05:02,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:05:02,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:05:02,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:05:02,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:05:02,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:05:02,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:05:01" (1/1) ... [2020-09-17 00:05:02,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c53cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02, skipping insertion in model container [2020-09-17 00:05:02,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:05:01" (1/1) ... [2020-09-17 00:05:02,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:05:02,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:05:02,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:05:02,644 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:05:02,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:05:02,784 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:05:02,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02 WrapperNode [2020-09-17 00:05:02,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:05:02,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:05:02,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:05:02,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:05:02,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:05:02,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:05:02,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:05:02,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:05:02,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... [2020-09-17 00:05:02,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:05:02,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:05:02,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:05:02,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:05:02,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:05:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:05:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:05:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:05:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:05:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:05:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:05:02,995 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:05:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:05:02,995 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:05:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:05:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-17 00:05:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-17 00:05:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:05:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:05:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:05:02,999 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:05:03,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:05:03,463 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:05:03,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:05:03 BoogieIcfgContainer [2020-09-17 00:05:03,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:05:03,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:05:03,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:05:03,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:05:03,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:05:01" (1/3) ... [2020-09-17 00:05:03,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f8130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:05:03, skipping insertion in model container [2020-09-17 00:05:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:05:02" (2/3) ... [2020-09-17 00:05:03,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f8130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:05:03, skipping insertion in model container [2020-09-17 00:05:03,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:05:03" (3/3) ... [2020-09-17 00:05:03,480 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-09-17 00:05:03,493 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:05:03,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:05:03,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:05:03,507 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:05:03,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,545 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,546 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,551 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,552 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,552 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,552 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,570 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:05:03,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 00:05:03,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:05:03,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:05:03,621 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:05:03,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:05:03,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:05:03,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:05:03,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:05:03,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:05:03,641 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-17 00:05:03,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-17 00:05:03,701 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-17 00:05:03,701 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:05:03,709 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. [2020-09-17 00:05:03,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-17 00:05:03,738 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-17 00:05:03,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:05:03,740 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. [2020-09-17 00:05:03,742 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-17 00:05:03,744 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:05:05,611 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-17 00:05:05,611 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 00:05:05,617 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-17 00:05:05,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-17 00:05:05,679 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-17 00:05:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:05:05,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:05,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:05,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-17 00:05:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:05,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078192488] [2020-09-17 00:05:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:05,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078192488] [2020-09-17 00:05:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:05:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110262658] [2020-09-17 00:05:05,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 00:05:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:05,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 00:05:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:05:05,999 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-17 00:05:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:06,057 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-17 00:05:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 00:05:06,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-17 00:05:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:06,096 INFO L225 Difference]: With dead ends: 850 [2020-09-17 00:05:06,096 INFO L226 Difference]: Without dead ends: 706 [2020-09-17 00:05:06,098 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 [2020-09-17 00:05:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-17 00:05:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-17 00:05:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-17 00:05:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-17 00:05:06,262 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-17 00:05:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:06,264 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-17 00:05:06,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 00:05:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-17 00:05:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:05:06,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:06,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:06,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:05:06,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-17 00:05:06,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:06,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372186383] [2020-09-17 00:05:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:06,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372186383] [2020-09-17 00:05:06,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:06,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:05:06,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610626973] [2020-09-17 00:05:06,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:05:06,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:06,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:05:06,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:05:06,466 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-17 00:05:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:06,533 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-17 00:05:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:06,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:05:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:06,540 INFO L225 Difference]: With dead ends: 802 [2020-09-17 00:05:06,540 INFO L226 Difference]: Without dead ends: 658 [2020-09-17 00:05:06,541 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 [2020-09-17 00:05:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-17 00:05:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-17 00:05:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-17 00:05:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-17 00:05:06,594 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-17 00:05:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:06,595 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-17 00:05:06,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:05:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-17 00:05:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:05:06,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:06,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:06,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:05:06,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-17 00:05:06,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:06,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81883167] [2020-09-17 00:05:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:06,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81883167] [2020-09-17 00:05:06,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:06,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:05:06,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641902997] [2020-09-17 00:05:06,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:05:06,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:06,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:05:06,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:05:06,693 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-17 00:05:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:06,723 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-17 00:05:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:06,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:05:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:06,729 INFO L225 Difference]: With dead ends: 718 [2020-09-17 00:05:06,729 INFO L226 Difference]: Without dead ends: 598 [2020-09-17 00:05:06,730 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 [2020-09-17 00:05:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-17 00:05:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-17 00:05:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-17 00:05:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-17 00:05:06,753 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-17 00:05:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:06,754 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-17 00:05:06,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:05:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-17 00:05:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:05:06,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:06,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:06,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:05:06,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-17 00:05:06,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:06,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982149930] [2020-09-17 00:05:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:06,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982149930] [2020-09-17 00:05:06,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:06,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:05:06,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736741327] [2020-09-17 00:05:06,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:05:06,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:06,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:05:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:05:06,838 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-17 00:05:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:06,865 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-09-17 00:05:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:06,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-17 00:05:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:06,870 INFO L225 Difference]: With dead ends: 634 [2020-09-17 00:05:06,870 INFO L226 Difference]: Without dead ends: 562 [2020-09-17 00:05:06,871 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 [2020-09-17 00:05:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-09-17 00:05:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-09-17 00:05:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-17 00:05:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-09-17 00:05:06,893 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-09-17 00:05:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:06,893 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-09-17 00:05:06,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:05:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-09-17 00:05:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:05:06,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:06,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:06,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:05:06,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-09-17 00:05:06,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:06,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768524623] [2020-09-17 00:05:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:06,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768524623] [2020-09-17 00:05:06,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:06,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:05:06,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366178995] [2020-09-17 00:05:06,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:05:06,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:05:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:05:06,995 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-09-17 00:05:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,064 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-09-17 00:05:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:05:07,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-17 00:05:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,068 INFO L225 Difference]: With dead ends: 834 [2020-09-17 00:05:07,069 INFO L226 Difference]: Without dead ends: 450 [2020-09-17 00:05:07,069 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 [2020-09-17 00:05:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-17 00:05:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-09-17 00:05:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-17 00:05:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-09-17 00:05:07,086 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-09-17 00:05:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,086 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-09-17 00:05:07,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:05:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-09-17 00:05:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:05:07,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:05:07,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,089 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-09-17 00:05:07,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515869699] [2020-09-17 00:05:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515869699] [2020-09-17 00:05:07,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:05:07,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056216311] [2020-09-17 00:05:07,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:05:07,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:05:07,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:05:07,159 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-09-17 00:05:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,249 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-09-17 00:05:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-17 00:05:07,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 00:05:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,253 INFO L225 Difference]: With dead ends: 834 [2020-09-17 00:05:07,254 INFO L226 Difference]: Without dead ends: 410 [2020-09-17 00:05:07,254 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 [2020-09-17 00:05:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-17 00:05:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-09-17 00:05:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-17 00:05:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-09-17 00:05:07,268 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-09-17 00:05:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,268 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-09-17 00:05:07,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:05:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-09-17 00:05:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:05:07,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:05:07,270 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,271 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-09-17 00:05:07,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910082712] [2020-09-17 00:05:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910082712] [2020-09-17 00:05:07,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:05:07,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321487287] [2020-09-17 00:05:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:05:07,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:05:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:05:07,332 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-09-17 00:05:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,363 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-09-17 00:05:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:07,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-17 00:05:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,367 INFO L225 Difference]: With dead ends: 494 [2020-09-17 00:05:07,367 INFO L226 Difference]: Without dead ends: 370 [2020-09-17 00:05:07,367 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 [2020-09-17 00:05:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-09-17 00:05:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-09-17 00:05:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-17 00:05:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-09-17 00:05:07,379 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-09-17 00:05:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,379 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-09-17 00:05:07,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:05:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-09-17 00:05:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:05:07,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:05:07,382 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-09-17 00:05:07,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125330515] [2020-09-17 00:05:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125330515] [2020-09-17 00:05:07,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:05:07,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118040464] [2020-09-17 00:05:07,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:05:07,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:05:07,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:05:07,477 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-09-17 00:05:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,522 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-09-17 00:05:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:07,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 00:05:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,525 INFO L225 Difference]: With dead ends: 454 [2020-09-17 00:05:07,525 INFO L226 Difference]: Without dead ends: 238 [2020-09-17 00:05:07,526 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 [2020-09-17 00:05:07,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-17 00:05:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-09-17 00:05:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-17 00:05:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-09-17 00:05:07,534 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-09-17 00:05:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,534 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-09-17 00:05:07,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:05:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-09-17 00:05:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:05:07,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:05:07,537 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,538 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-17 00:05:07,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858008538] [2020-09-17 00:05:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858008538] [2020-09-17 00:05:07,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:05:07,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890139013] [2020-09-17 00:05:07,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:05:07,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:05:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:05:07,623 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-09-17 00:05:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,663 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-09-17 00:05:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:05:07,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-17 00:05:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,665 INFO L225 Difference]: With dead ends: 283 [2020-09-17 00:05:07,665 INFO L226 Difference]: Without dead ends: 214 [2020-09-17 00:05:07,666 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 [2020-09-17 00:05:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-17 00:05:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-17 00:05:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-17 00:05:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-09-17 00:05:07,673 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-09-17 00:05:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,673 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-09-17 00:05:07,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:05:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-09-17 00:05:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-17 00:05:07,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:05:07,675 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-17 00:05:07,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713574393] [2020-09-17 00:05:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713574393] [2020-09-17 00:05:07,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:05:07,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368877834] [2020-09-17 00:05:07,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:05:07,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:05:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:05:07,756 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-09-17 00:05:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,808 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-09-17 00:05:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:05:07,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-17 00:05:07,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,811 INFO L225 Difference]: With dead ends: 211 [2020-09-17 00:05:07,811 INFO L226 Difference]: Without dead ends: 158 [2020-09-17 00:05:07,811 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 [2020-09-17 00:05:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-17 00:05:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-17 00:05:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-17 00:05:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-09-17 00:05:07,817 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-09-17 00:05:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,817 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-09-17 00:05:07,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:05:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-09-17 00:05:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:05:07,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 00:05:07,819 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-17 00:05:07,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356581818] [2020-09-17 00:05:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:07,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356581818] [2020-09-17 00:05:07,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:07,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 00:05:07,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614212731] [2020-09-17 00:05:07,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:05:07,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:07,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:05:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:05:07,905 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-09-17 00:05:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:07,963 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-09-17 00:05:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:05:07,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-17 00:05:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:07,965 INFO L225 Difference]: With dead ends: 134 [2020-09-17 00:05:07,965 INFO L226 Difference]: Without dead ends: 95 [2020-09-17 00:05:07,965 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 [2020-09-17 00:05:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-17 00:05:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-17 00:05:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-17 00:05:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-09-17 00:05:07,969 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-09-17 00:05:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:07,969 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-09-17 00:05:07,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:05:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-09-17 00:05:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 00:05:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:07,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:07,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-17 00:05:07,971 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-17 00:05:07,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:07,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321593958] [2020-09-17 00:05:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:08,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321593958] [2020-09-17 00:05:08,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:08,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:05:08,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708123163] [2020-09-17 00:05:08,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:05:08,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:05:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:05:08,036 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-09-17 00:05:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:08,069 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-09-17 00:05:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:05:08,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-17 00:05:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:08,071 INFO L225 Difference]: With dead ends: 109 [2020-09-17 00:05:08,071 INFO L226 Difference]: Without dead ends: 93 [2020-09-17 00:05:08,071 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 [2020-09-17 00:05:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-17 00:05:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-09-17 00:05:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-17 00:05:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-09-17 00:05:08,075 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-09-17 00:05:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:08,075 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-09-17 00:05:08,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:05:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-09-17 00:05:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 00:05:08,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:05:08,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:05:08,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 00:05:08,076 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:05:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:05:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-17 00:05:08,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:05:08,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979058110] [2020-09-17 00:05:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:05:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:05:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:05:08,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979058110] [2020-09-17 00:05:08,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:05:08,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-17 00:05:08,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22283168] [2020-09-17 00:05:08,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 00:05:08,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:05:08,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 00:05:08,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:05:08,174 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-09-17 00:05:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:05:08,219 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-09-17 00:05:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:05:08,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 00:05:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:05:08,220 INFO L225 Difference]: With dead ends: 81 [2020-09-17 00:05:08,220 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:05:08,220 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 [2020-09-17 00:05:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:05:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:05:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:05:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:05:08,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-17 00:05:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:05:08,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:05:08,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 00:05:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:05:08,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:05:08,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 00:05:08,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:05:08 BasicIcfg [2020-09-17 00:05:08,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:05:08,230 INFO L168 Benchmark]: Toolchain (without parser) took 6219.38 ms. Allocated memory was 143.7 MB in the beginning and 291.0 MB in the end (delta: 147.3 MB). Free memory was 101.3 MB in the beginning and 142.9 MB in the end (delta: -41.6 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,231 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.31 ms. Allocated memory was 143.7 MB in the beginning and 203.4 MB in the end (delta: 59.8 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,233 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,234 INFO L168 Benchmark]: RCFGBuilder took 551.36 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 132.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,235 INFO L168 Benchmark]: TraceAbstraction took 4756.09 ms. Allocated memory was 203.4 MB in the beginning and 291.0 MB in the end (delta: 87.6 MB). Free memory was 132.8 MB in the beginning and 142.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-09-17 00:05:08,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.31 ms. Allocated memory was 143.7 MB in the beginning and 203.4 MB in the end (delta: 59.8 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 86.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 551.36 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 132.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4756.09 ms. Allocated memory was 203.4 MB in the beginning and 291.0 MB in the end (delta: 87.6 MB). Free memory was 132.8 MB in the beginning and 142.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s 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...