/usr/bin/java -Xmx16000000000 -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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:32:49,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:32:49,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:32:50,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:32:50,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:32:50,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:32:50,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:32:50,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:32:50,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:32:50,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:32:50,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:32:50,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:32:50,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:32:50,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:32:50,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:32:50,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:32:50,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:32:50,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:32:50,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:32:50,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:32:50,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:32:50,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:32:50,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:32:50,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:32:50,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:32:50,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:32:50,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:32:50,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:32:50,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:32:50,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:32:50,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:32:50,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:32:50,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:32:50,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:32:50,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:32:50,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:32:50,077 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 [2020-10-15 18:32:50,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:32:50,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:32:50,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:32:50,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:32:50,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:32:50,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:32:50,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:32:50,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:32:50,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:32:50,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:32:50,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:32:50,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:32:50,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:32:50,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:32:50,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:32:50,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:32:50,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:32:50,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:32:50,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:32:50,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:32:50,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:32:50,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:32:50,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:32:50,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:32:50,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:32:50,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:32:50,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:32:50,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:32:50,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:32:50,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:32:50,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:32:50,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:32:50,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:32:50,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:32:50,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:32:50,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-15 18:32:50,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca056674/c586fea3cafb44bb922de952f5241e3a/FLAGaa18198c4 [2020-10-15 18:32:51,047 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:32:51,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-15 18:32:51,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca056674/c586fea3cafb44bb922de952f5241e3a/FLAGaa18198c4 [2020-10-15 18:32:51,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca056674/c586fea3cafb44bb922de952f5241e3a [2020-10-15 18:32:51,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:32:51,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:32:51,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:32:51,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:32:51,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:32:51,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:32:51" (1/1) ... [2020-10-15 18:32:51,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732d236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:51, skipping insertion in model container [2020-10-15 18:32:51,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:32:51" (1/1) ... [2020-10-15 18:32:51,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:32:51,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:32:51,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:32:52,000 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:32:52,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:32:52,173 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:32:52,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52 WrapperNode [2020-10-15 18:32:52,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:32:52,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:32:52,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:32:52,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:32:52,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:32:52,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:32:52,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:32:52,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:32:52,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (1/1) ... [2020-10-15 18:32:52,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:32:52,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:32:52,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:32:52,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:32:52,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (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 [2020-10-15 18:32:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:32:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:32:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:32:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:32:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:32:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:32:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:32:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:32:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:32:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:32:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:32:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:32:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:32:52,332 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:32:52,657 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:32:52,657 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:32:52,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:32:52 BoogieIcfgContainer [2020-10-15 18:32:52,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:32:52,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:32:52,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:32:52,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:32:52,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:32:51" (1/3) ... [2020-10-15 18:32:52,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b71118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:32:52, skipping insertion in model container [2020-10-15 18:32:52,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:32:52" (2/3) ... [2020-10-15 18:32:52,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b71118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:32:52, skipping insertion in model container [2020-10-15 18:32:52,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:32:52" (3/3) ... [2020-10-15 18:32:52,668 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-10-15 18:32:52,678 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:32:52,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:32:52,686 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:32:52,687 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:32:52,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,718 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,718 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:32:52,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:32:52,777 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:32:52,778 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:32:52,778 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:32:52,778 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:32:52,778 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:32:52,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:32:52,779 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:32:52,779 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:32:52,792 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:32:52,795 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:32:52,798 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:32:52,801 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 18:32:52,845 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 18:32:52,846 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:32:52,851 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:32:52,854 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:32:54,414 INFO L132 LiptonReduction]: Checked pairs total: 2407 [2020-10-15 18:32:54,414 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 18:32:54,421 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-15 18:32:54,458 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:32:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:32:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:32:54,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:54,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:54,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-10-15 18:32:54,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:54,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164740694] [2020-10-15 18:32:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:54,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164740694] [2020-10-15 18:32:54,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:54,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:32:54,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125243144] [2020-10-15 18:32:54,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:32:54,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:54,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:32:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:54,768 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:32:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:54,819 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-15 18:32:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:32:54,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:32:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:54,837 INFO L225 Difference]: With dead ends: 290 [2020-10-15 18:32:54,838 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 18:32:54,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 18:32:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-15 18:32:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 18:32:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-15 18:32:54,915 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-15 18:32:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:54,916 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-15 18:32:54,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:32:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-15 18:32:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:32:54,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:54,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:54,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:32:54,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-10-15 18:32:54,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112960324] [2020-10-15 18:32:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:54,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112960324] [2020-10-15 18:32:54,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:54,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:32:54,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052362366] [2020-10-15 18:32:54,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:32:54,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:54,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:32:54,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:54,997 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-15 18:32:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,013 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-15 18:32:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:32:55,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:32:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,017 INFO L225 Difference]: With dead ends: 220 [2020-10-15 18:32:55,017 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 18:32:55,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 18:32:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-15 18:32:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-15 18:32:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-15 18:32:55,046 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-15 18:32:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,046 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-15 18:32:55,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:32:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-15 18:32:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:32:55,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:32:55,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1053246614, now seen corresponding path program 1 times [2020-10-15 18:32:55,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218278487] [2020-10-15 18:32:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218278487] [2020-10-15 18:32:55,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:32:55,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603108554] [2020-10-15 18:32:55,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:32:55,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:32:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,096 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-10-15 18:32:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,110 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-10-15 18:32:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:32:55,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 18:32:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,113 INFO L225 Difference]: With dead ends: 296 [2020-10-15 18:32:55,113 INFO L226 Difference]: Without dead ends: 236 [2020-10-15 18:32:55,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-15 18:32:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-10-15 18:32:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-15 18:32:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-10-15 18:32:55,130 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-10-15 18:32:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,130 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-10-15 18:32:55,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:32:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-10-15 18:32:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:32:55,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:32:55,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1826039448, now seen corresponding path program 1 times [2020-10-15 18:32:55,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644322561] [2020-10-15 18:32:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644322561] [2020-10-15 18:32:55,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:32:55,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353089226] [2020-10-15 18:32:55,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:32:55,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:32:55,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,180 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-10-15 18:32:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,187 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-10-15 18:32:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:32:55,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 18:32:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,189 INFO L225 Difference]: With dead ends: 203 [2020-10-15 18:32:55,190 INFO L226 Difference]: Without dead ends: 203 [2020-10-15 18:32:55,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-15 18:32:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-15 18:32:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-15 18:32:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-10-15 18:32:55,206 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-10-15 18:32:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,207 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-10-15 18:32:55,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:32:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-10-15 18:32:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:32:55,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:32:55,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,211 INFO L82 PathProgramCache]: Analyzing trace with hash -772648785, now seen corresponding path program 1 times [2020-10-15 18:32:55,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315299884] [2020-10-15 18:32:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315299884] [2020-10-15 18:32:55,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:32:55,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559355799] [2020-10-15 18:32:55,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:32:55,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:32:55,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:32:55,301 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-10-15 18:32:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,334 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-10-15 18:32:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:32:55,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:32:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,336 INFO L225 Difference]: With dead ends: 240 [2020-10-15 18:32:55,336 INFO L226 Difference]: Without dead ends: 144 [2020-10-15 18:32:55,339 INFO L677 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 [2020-10-15 18:32:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-15 18:32:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-15 18:32:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 18:32:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-10-15 18:32:55,350 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-10-15 18:32:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,350 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-10-15 18:32:55,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:32:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-10-15 18:32:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:32:55,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:32:55,353 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-10-15 18:32:55,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597984655] [2020-10-15 18:32:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597984655] [2020-10-15 18:32:55,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:32:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388688923] [2020-10-15 18:32:55,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:32:55,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:32:55,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:32:55,417 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 4 states. [2020-10-15 18:32:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,449 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-10-15 18:32:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:32:55,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 18:32:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,451 INFO L225 Difference]: With dead ends: 164 [2020-10-15 18:32:55,451 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 18:32:55,452 INFO L677 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 [2020-10-15 18:32:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 18:32:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-15 18:32:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 18:32:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-10-15 18:32:55,457 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-10-15 18:32:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,457 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-10-15 18:32:55,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:32:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-10-15 18:32:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:32:55,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:32:55,459 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,459 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-10-15 18:32:55,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938100547] [2020-10-15 18:32:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938100547] [2020-10-15 18:32:55,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:32:55,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301198691] [2020-10-15 18:32:55,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:32:55,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:32:55,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:32:55,511 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-10-15 18:32:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,552 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-10-15 18:32:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:32:55,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 18:32:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,554 INFO L225 Difference]: With dead ends: 122 [2020-10-15 18:32:55,554 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 18:32:55,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:32:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 18:32:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 18:32:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 18:32:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-10-15 18:32:55,558 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-10-15 18:32:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,558 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-10-15 18:32:55,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:32:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-10-15 18:32:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:32:55,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:32:55,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-10-15 18:32:55,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652060121] [2020-10-15 18:32:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652060121] [2020-10-15 18:32:55,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:32:55,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284330346] [2020-10-15 18:32:55,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:32:55,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:32:55,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,586 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-10-15 18:32:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,592 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-10-15 18:32:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:32:55,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-15 18:32:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,593 INFO L225 Difference]: With dead ends: 101 [2020-10-15 18:32:55,593 INFO L226 Difference]: Without dead ends: 73 [2020-10-15 18:32:55,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:32:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-15 18:32:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-15 18:32:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 18:32:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-10-15 18:32:55,597 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-10-15 18:32:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,597 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-10-15 18:32:55,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:32:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-10-15 18:32:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:32:55,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:32:55,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:32:55,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:32:55,598 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:32:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:32:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-10-15 18:32:55,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:32:55,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216423174] [2020-10-15 18:32:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:32:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:32:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:32:55,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216423174] [2020-10-15 18:32:55,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:32:55,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:32:55,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821071426] [2020-10-15 18:32:55,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:32:55,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:32:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:32:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:32:55,652 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 6 states. [2020-10-15 18:32:55,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:32:55,681 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-10-15 18:32:55,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:32:55,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:32:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:32:55,682 INFO L225 Difference]: With dead ends: 67 [2020-10-15 18:32:55,682 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:32:55,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:32:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:32:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:32:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:32:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:32:55,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-15 18:32:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:32:55,684 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:32:55,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:32:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:32:55,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:32:55,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:32:55,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:32:55 BasicIcfg [2020-10-15 18:32:55,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:32:55,690 INFO L168 Benchmark]: Toolchain (without parser) took 4335.45 ms. Allocated memory was 253.2 MB in the beginning and 373.3 MB in the end (delta: 120.1 MB). Free memory was 205.9 MB in the beginning and 240.2 MB in the end (delta: -34.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,691 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:32:55,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.93 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 205.9 MB in the beginning and 273.7 MB in the end (delta: -67.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.61 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,693 INFO L168 Benchmark]: Boogie Preprocessor took 28.08 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,694 INFO L168 Benchmark]: RCFGBuilder took 395.88 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 246.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,695 INFO L168 Benchmark]: TraceAbstraction took 3027.08 ms. Allocated memory was 320.3 MB in the beginning and 373.3 MB in the end (delta: 53.0 MB). Free memory was 246.8 MB in the beginning and 240.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 59.6 MB. Max. memory is 14.2 GB. [2020-10-15 18:32:55,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 818.93 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 205.9 MB in the beginning and 273.7 MB in the end (delta: -67.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 59.61 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.08 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 395.88 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 246.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3027.08 ms. Allocated memory was 320.3 MB in the beginning and 373.3 MB in the end (delta: 53.0 MB). Free memory was 246.8 MB in the beginning and 240.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 59.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 853 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2407 MoverChecksTotal - 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 167 SDtfs, 120 SDslu, 173 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...