/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:24:01,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:24:01,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:24:01,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:24:01,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:24:01,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:24:01,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:24:01,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:24:01,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:24:01,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:24:01,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:24:01,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:24:01,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:24:01,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:24:01,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:24:01,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:24:01,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:24:01,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:24:01,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:24:01,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:24:01,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:24:01,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:24:01,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:24:01,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:24:01,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:24:01,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:24:01,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:24:01,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:24:01,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:24:01,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:24:01,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:24:01,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:24:01,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:24:01,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:24:01,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:24:01,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:24:01,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:24:01,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:24:01,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:24:01,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:24:01,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:24:01,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:24:01,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:24:01,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:24:01,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:24:01,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:24:01,138 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:24:01,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:24:01,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:24:01,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:24:01,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:24:01,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:24:01,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:24:01,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:24:01,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:24:01,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:24:01,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:24:01,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:24:01,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:24:01,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:24:01,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:24:01,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:24:01,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:24:01,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:24:01,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:24:01,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:24:01,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:24:01,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:24:01,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:24:01,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:24:01,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:24:01,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:24:01,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:24:01,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:24:01,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:24:01,433 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:24:01,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-17 22:24:01,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74a4219b/ea5ddf77bfd84afebe931a4e84c5428b/FLAG2f4916c5e [2020-04-17 22:24:02,088 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:24:02,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-17 22:24:02,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74a4219b/ea5ddf77bfd84afebe931a4e84c5428b/FLAG2f4916c5e [2020-04-17 22:24:02,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74a4219b/ea5ddf77bfd84afebe931a4e84c5428b [2020-04-17 22:24:02,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:24:02,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:24:02,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:24:02,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:24:02,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:24:02,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:24:02" (1/1) ... [2020-04-17 22:24:02,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dff61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:02, skipping insertion in model container [2020-04-17 22:24:02,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:24:02" (1/1) ... [2020-04-17 22:24:02,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:24:02,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:24:03,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:24:03,143 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:24:03,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:24:03,292 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:24:03,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03 WrapperNode [2020-04-17 22:24:03,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:24:03,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:24:03,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:24:03,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:24:03,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:24:03,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:24:03,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:24:03,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:24:03,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... [2020-04-17 22:24:03,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:24:03,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:24:03,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:24:03,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:24:03,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:24:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:24:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:24:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:24:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:24:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:24:03,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:24:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:24:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:24:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:24:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:24:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:24:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:24:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:24:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:24:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:24:03,456 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:24:03,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:24:03,886 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:24:03,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:24:03 BoogieIcfgContainer [2020-04-17 22:24:03,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:24:03,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:24:03,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:24:03,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:24:03,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:24:02" (1/3) ... [2020-04-17 22:24:03,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359047e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:24:03, skipping insertion in model container [2020-04-17 22:24:03,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:24:03" (2/3) ... [2020-04-17 22:24:03,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359047e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:24:03, skipping insertion in model container [2020-04-17 22:24:03,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:24:03" (3/3) ... [2020-04-17 22:24:03,909 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-04-17 22:24:03,917 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:24:03,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:24:03,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:24:03,925 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:24:03,954 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,954 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,954 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,955 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,956 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,956 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,957 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,957 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,957 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,957 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,958 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,958 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,958 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,958 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,959 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,959 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,959 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,959 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,960 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,960 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,960 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,960 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,961 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,961 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,965 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,965 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,965 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,966 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,971 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,972 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,972 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,975 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,975 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,975 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,975 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,979 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,980 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,980 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:03,980 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:24:04,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:24:04,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:24:04,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:24:04,023 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:24:04,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:24:04,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:24:04,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:24:04,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:24:04,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:24:04,039 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-17 22:24:04,042 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-17 22:24:04,091 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 22:24:04,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:24:04,097 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:24:04,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-17 22:24:04,126 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 22:24:04,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:24:04,128 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:24:04,131 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 22:24:04,132 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:24:06,077 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 22:24:06,161 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-17 22:24:06,161 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-17 22:24:06,165 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 22:24:06,232 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 22:24:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 22:24:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:24:06,245 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:06,246 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:06,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-17 22:24:06,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:06,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709813606] [2020-04-17 22:24:06,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:06,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709813606] [2020-04-17 22:24:06,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:06,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:24:06,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015543891] [2020-04-17 22:24:06,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:24:06,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:24:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:24:06,450 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 22:24:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:06,522 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 22:24:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:24:06,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:24:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:06,554 INFO L225 Difference]: With dead ends: 850 [2020-04-17 22:24:06,554 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 22:24:06,555 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:24:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 22:24:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 22:24:06,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 22:24:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 22:24:06,689 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 22:24:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:06,690 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 22:24:06,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:24:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 22:24:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:24:06,693 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:06,693 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:06,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:06,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-17 22:24:06,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:06,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907346329] [2020-04-17 22:24:06,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:06,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907346329] [2020-04-17 22:24:06,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:06,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:24:06,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852460387] [2020-04-17 22:24:06,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:24:06,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:06,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:24:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:24:06,841 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 22:24:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:06,906 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 22:24:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:24:06,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:24:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:06,915 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:24:06,915 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 22:24:06,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 22:24:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 22:24:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 22:24:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 22:24:06,965 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 22:24:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:06,965 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 22:24:06,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:24:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 22:24:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:24:06,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:06,975 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:06,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:06,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-04-17 22:24:06,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:06,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700079681] [2020-04-17 22:24:06,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:07,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700079681] [2020-04-17 22:24:07,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:07,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:24:07,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211081244] [2020-04-17 22:24:07,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:24:07,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:07,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:24:07,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:24:07,133 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 22:24:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:07,166 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-17 22:24:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:24:07,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:24:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:07,171 INFO L225 Difference]: With dead ends: 688 [2020-04-17 22:24:07,172 INFO L226 Difference]: Without dead ends: 580 [2020-04-17 22:24:07,172 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-17 22:24:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-17 22:24:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-17 22:24:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-17 22:24:07,198 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-17 22:24:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:07,199 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-17 22:24:07,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:24:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-17 22:24:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:24:07,202 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:07,202 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:07,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-17 22:24:07,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:07,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720940447] [2020-04-17 22:24:07,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:07,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720940447] [2020-04-17 22:24:07,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:07,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:24:07,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199496622] [2020-04-17 22:24:07,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:24:07,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:07,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:24:07,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:24:07,345 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 6 states. [2020-04-17 22:24:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:07,495 INFO L93 Difference]: Finished difference Result 859 states and 2769 transitions. [2020-04-17 22:24:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:24:07,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-17 22:24:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:07,500 INFO L225 Difference]: With dead ends: 859 [2020-04-17 22:24:07,500 INFO L226 Difference]: Without dead ends: 466 [2020-04-17 22:24:07,500 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:24:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-04-17 22:24:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-04-17 22:24:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-04-17 22:24:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1466 transitions. [2020-04-17 22:24:07,518 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1466 transitions. Word has length 13 [2020-04-17 22:24:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:07,518 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1466 transitions. [2020-04-17 22:24:07,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:24:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1466 transitions. [2020-04-17 22:24:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:24:07,520 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:07,520 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:07,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-17 22:24:07,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:07,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847778124] [2020-04-17 22:24:07,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:07,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847778124] [2020-04-17 22:24:07,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:07,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:24:07,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040471851] [2020-04-17 22:24:07,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:24:07,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:07,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:24:07,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:07,582 INFO L87 Difference]: Start difference. First operand 466 states and 1466 transitions. Second operand 5 states. [2020-04-17 22:24:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:07,661 INFO L93 Difference]: Finished difference Result 661 states and 2029 transitions. [2020-04-17 22:24:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:24:07,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:24:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:07,665 INFO L225 Difference]: With dead ends: 661 [2020-04-17 22:24:07,665 INFO L226 Difference]: Without dead ends: 352 [2020-04-17 22:24:07,665 INFO L678 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 [2020-04-17 22:24:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-04-17 22:24:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2020-04-17 22:24:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-04-17 22:24:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1048 transitions. [2020-04-17 22:24:07,684 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1048 transitions. Word has length 14 [2020-04-17 22:24:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:07,684 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 1048 transitions. [2020-04-17 22:24:07,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:24:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1048 transitions. [2020-04-17 22:24:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:24:07,686 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:07,686 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:07,686 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 228015141, now seen corresponding path program 1 times [2020-04-17 22:24:07,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:07,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705630996] [2020-04-17 22:24:07,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:07,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705630996] [2020-04-17 22:24:07,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:07,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:24:07,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448321241] [2020-04-17 22:24:07,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:24:07,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:07,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:24:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:07,778 INFO L87 Difference]: Start difference. First operand 352 states and 1048 transitions. Second operand 5 states. [2020-04-17 22:24:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:07,833 INFO L93 Difference]: Finished difference Result 424 states and 1225 transitions. [2020-04-17 22:24:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:24:07,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:24:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:07,837 INFO L225 Difference]: With dead ends: 424 [2020-04-17 22:24:07,837 INFO L226 Difference]: Without dead ends: 262 [2020-04-17 22:24:07,837 INFO L678 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 [2020-04-17 22:24:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-17 22:24:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-17 22:24:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-17 22:24:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-17 22:24:07,847 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 15 [2020-04-17 22:24:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:07,847 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-17 22:24:07,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:24:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-17 22:24:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:24:07,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:07,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:07,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-17 22:24:07,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:07,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804313633] [2020-04-17 22:24:07,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:07,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804313633] [2020-04-17 22:24:07,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:07,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:24:07,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744578620] [2020-04-17 22:24:07,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:24:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:07,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:24:07,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:24:07,949 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 4 states. [2020-04-17 22:24:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:07,995 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-17 22:24:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:24:07,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:24:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:07,998 INFO L225 Difference]: With dead ends: 319 [2020-04-17 22:24:07,998 INFO L226 Difference]: Without dead ends: 238 [2020-04-17 22:24:07,999 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-17 22:24:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-17 22:24:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-17 22:24:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-17 22:24:08,008 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-17 22:24:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,009 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-17 22:24:08,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:24:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-17 22:24:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:24:08,010 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:08,010 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:08,010 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-17 22:24:08,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:08,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721641404] [2020-04-17 22:24:08,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:08,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721641404] [2020-04-17 22:24:08,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:08,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:24:08,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847804029] [2020-04-17 22:24:08,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:24:08,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:24:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:08,135 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 5 states. [2020-04-17 22:24:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:08,234 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-17 22:24:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:24:08,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:24:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:08,236 INFO L225 Difference]: With dead ends: 247 [2020-04-17 22:24:08,236 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 22:24:08,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:24:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 22:24:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 22:24:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 22:24:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-17 22:24:08,244 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-17 22:24:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,245 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-17 22:24:08,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:24:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-17 22:24:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:24:08,252 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:08,252 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:08,252 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:08,252 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-17 22:24:08,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:08,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759301551] [2020-04-17 22:24:08,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:08,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759301551] [2020-04-17 22:24:08,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:08,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:24:08,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406430614] [2020-04-17 22:24:08,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:24:08,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:08,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:24:08,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:24:08,331 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 6 states. [2020-04-17 22:24:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:08,389 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-17 22:24:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:24:08,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 22:24:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:08,391 INFO L225 Difference]: With dead ends: 165 [2020-04-17 22:24:08,391 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 22:24:08,391 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:24:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 22:24:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 22:24:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 22:24:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-17 22:24:08,396 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-17 22:24:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,396 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-17 22:24:08,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:24:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-17 22:24:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:24:08,397 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:08,398 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:08,398 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-17 22:24:08,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:08,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782828679] [2020-04-17 22:24:08,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:08,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782828679] [2020-04-17 22:24:08,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:08,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:24:08,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436573369] [2020-04-17 22:24:08,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 22:24:08,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 22:24:08,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:24:08,461 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 7 states. [2020-04-17 22:24:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:08,551 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-17 22:24:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:24:08,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 22:24:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:08,554 INFO L225 Difference]: With dead ends: 121 [2020-04-17 22:24:08,554 INFO L226 Difference]: Without dead ends: 112 [2020-04-17 22:24:08,555 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:24:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-17 22:24:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-17 22:24:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-17 22:24:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-17 22:24:08,559 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-17 22:24:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,559 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-17 22:24:08,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 22:24:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-17 22:24:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 22:24:08,561 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:08,561 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:08,561 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:08,562 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-17 22:24:08,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:08,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8812289] [2020-04-17 22:24:08,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:08,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8812289] [2020-04-17 22:24:08,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:08,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:24:08,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588929551] [2020-04-17 22:24:08,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:24:08,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:24:08,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:08,643 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 5 states. [2020-04-17 22:24:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:08,683 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2020-04-17 22:24:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:24:08,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 22:24:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:08,685 INFO L225 Difference]: With dead ends: 146 [2020-04-17 22:24:08,685 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 22:24:08,685 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:24:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 22:24:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 22:24:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 22:24:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-17 22:24:08,688 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2020-04-17 22:24:08,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,688 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-17 22:24:08,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:24:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-17 22:24:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 22:24:08,689 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:24:08,689 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:24:08,689 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:24:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:24:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 2 times [2020-04-17 22:24:08,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:24:08,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085733478] [2020-04-17 22:24:08,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:24:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:24:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:24:08,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085733478] [2020-04-17 22:24:08,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:24:08,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:24:08,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39176270] [2020-04-17 22:24:08,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:24:08,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:24:08,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:24:08,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:24:08,783 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 5 states. [2020-04-17 22:24:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:24:08,810 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-17 22:24:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:24:08,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 22:24:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:24:08,811 INFO L225 Difference]: With dead ends: 51 [2020-04-17 22:24:08,811 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:24:08,812 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:24:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:24:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:24:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:24:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:24:08,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-17 22:24:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:24:08,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:24:08,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:24:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:24:08,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:24:08,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:24:08 BasicIcfg [2020-04-17 22:24:08,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:24:08,824 INFO L168 Benchmark]: Toolchain (without parser) took 6390.25 ms. Allocated memory was 144.7 MB in the beginning and 289.9 MB in the end (delta: 145.2 MB). Free memory was 101.6 MB in the beginning and 179.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,825 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.80 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 99.7 MB in the beginning and 160.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 157.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,828 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,833 INFO L168 Benchmark]: RCFGBuilder took 518.65 ms. Allocated memory is still 203.9 MB. Free memory was 155.9 MB in the beginning and 131.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,834 INFO L168 Benchmark]: TraceAbstraction took 4920.09 ms. Allocated memory was 203.9 MB in the beginning and 289.9 MB in the end (delta: 86.0 MB). Free memory was 131.4 MB in the beginning and 179.6 MB in the end (delta: -48.2 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:24:08,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 846.80 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 99.7 MB in the beginning and 160.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 157.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.65 ms. Allocated memory is still 203.9 MB. Free memory was 155.9 MB in the beginning and 131.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4920.09 ms. Allocated memory was 203.9 MB in the beginning and 289.9 MB in the end (delta: 86.0 MB). Free memory was 131.4 MB in the beginning and 179.6 MB in the end (delta: -48.2 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 945 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 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, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 286 SDtfs, 354 SDslu, 543 SDs, 0 SdLazy, 272 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 8524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...