/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:12:35,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:12:35,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:12:35,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:12:35,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:12:35,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:12:35,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:12:35,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:12:35,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:12:35,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:12:35,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:12:35,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:12:35,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:12:35,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:12:35,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:12:35,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:12:35,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:12:35,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:12:35,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:12:35,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:12:35,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:12:35,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:12:35,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:12:35,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:12:35,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:12:35,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:12:35,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:12:35,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:12:35,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:12:35,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:12:35,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:12:35,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:12:35,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:12:35,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:12:35,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:12:35,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:12:35,222 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 [2020-10-15 22:12:35,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:12:35,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:12:35,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:12:35,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:12:35,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:12:35,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:12:35,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:12:35,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:12:35,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:12:35,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:12:35,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:12:35,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:12:35,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:12:35,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:12:35,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:12:35,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:12:35,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:12:35,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:12:35,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:12:35,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:12:35,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:12:35,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:12:35,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:12:35,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:12:35,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:12:35,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:12:35,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:12:35,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:12:35,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:12:35,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:12:35,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:12:35,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:12:35,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:12:35,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:12:35,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-15 22:12:35,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a88a4a8d/83fe588ec441431186cb93532e8c2a7a/FLAG10931c7d2 [2020-10-15 22:12:36,177 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:12:36,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-15 22:12:36,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a88a4a8d/83fe588ec441431186cb93532e8c2a7a/FLAG10931c7d2 [2020-10-15 22:12:36,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a88a4a8d/83fe588ec441431186cb93532e8c2a7a [2020-10-15 22:12:36,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:12:36,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:12:36,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:36,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:12:36,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:12:36,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:36" (1/1) ... [2020-10-15 22:12:36,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:36, skipping insertion in model container [2020-10-15 22:12:36,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:36" (1/1) ... [2020-10-15 22:12:36,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:12:36,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:12:36,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:36,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:12:37,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:37,120 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:12:37,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37 WrapperNode [2020-10-15 22:12:37,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:37,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:37,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:12:37,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:12:37,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:37,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:12:37,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:12:37,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:12:37,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (1/1) ... [2020-10-15 22:12:37,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:12:37,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:12:37,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:12:37,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:12:37,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (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 22:12:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:12:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:12:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:12:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:12:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:12:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:12:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:12:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:12:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:12:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:12:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:12:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:12:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:12:37,280 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 22:12:37,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:12:37,615 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:12:37,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:37 BoogieIcfgContainer [2020-10-15 22:12:37,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:12:37,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:12:37,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:12:37,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:12:37,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:12:36" (1/3) ... [2020-10-15 22:12:37,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c33e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:37, skipping insertion in model container [2020-10-15 22:12:37,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:37" (2/3) ... [2020-10-15 22:12:37,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c33e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:37, skipping insertion in model container [2020-10-15 22:12:37,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:37" (3/3) ... [2020-10-15 22:12:37,624 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-10-15 22:12:37,633 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:12:37,633 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:12:37,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:12:37,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:12:37,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,678 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,678 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,679 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,679 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,683 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,683 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:37,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:12:37,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:12:37,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:12:37,729 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:12:37,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:12:37,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:12:37,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:12:37,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:12:37,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:12:37,741 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:12:37,744 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-15 22:12:37,747 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-15 22:12:37,749 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-15 22:12:37,789 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-15 22:12:37,789 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:12:37,794 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-15 22:12:37,797 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-15 22:12:39,185 INFO L132 LiptonReduction]: Checked pairs total: 1902 [2020-10-15 22:12:39,185 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-15 22:12:39,192 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-15 22:12:39,218 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-15 22:12:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-15 22:12:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:12:39,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:39,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:39,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-10-15 22:12:39,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:39,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111842672] [2020-10-15 22:12:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:39,450 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 22:12:39,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111842672] [2020-10-15 22:12:39,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:39,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:12:39,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928239718] [2020-10-15 22:12:39,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:12:39,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:39,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:12:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:12:39,476 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-15 22:12:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:39,516 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-15 22:12:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:12:39,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:12:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:39,532 INFO L225 Difference]: With dead ends: 220 [2020-10-15 22:12:39,532 INFO L226 Difference]: Without dead ends: 172 [2020-10-15 22:12:39,534 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 22:12:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-15 22:12:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-15 22:12:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-15 22:12:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-15 22:12:39,595 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-15 22:12:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:39,597 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-15 22:12:39,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:12:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-15 22:12:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:12:39,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:39,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:39,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:12:39,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:39,600 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-10-15 22:12:39,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:39,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25579432] [2020-10-15 22:12:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:39,691 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 22:12:39,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25579432] [2020-10-15 22:12:39,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:39,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:12:39,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009768750] [2020-10-15 22:12:39,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:12:39,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:12:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:12:39,697 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-15 22:12:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:39,713 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-10-15 22:12:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:12:39,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 22:12:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:39,716 INFO L225 Difference]: With dead ends: 166 [2020-10-15 22:12:39,716 INFO L226 Difference]: Without dead ends: 166 [2020-10-15 22:12:39,717 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 22:12:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-15 22:12:39,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-15 22:12:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-15 22:12:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-10-15 22:12:39,735 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-10-15 22:12:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:39,735 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-10-15 22:12:39,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:12:39,736 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-10-15 22:12:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:12:39,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:39,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:39,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:12:39,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-10-15 22:12:39,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:39,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998245244] [2020-10-15 22:12:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:39,778 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 22:12:39,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998245244] [2020-10-15 22:12:39,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:39,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:12:39,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370051781] [2020-10-15 22:12:39,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:12:39,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:39,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:12:39,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:12:39,781 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-10-15 22:12:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:39,792 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-10-15 22:12:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:12:39,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 22:12:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:39,797 INFO L225 Difference]: With dead ends: 158 [2020-10-15 22:12:39,797 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 22:12:39,798 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 22:12:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 22:12:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-15 22:12:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-15 22:12:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-10-15 22:12:39,809 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-10-15 22:12:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-10-15 22:12:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:12:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-10-15 22:12:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:12:39,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:39,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:39,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:12:39,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-10-15 22:12:39,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:39,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294825312] [2020-10-15 22:12:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:39,868 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 22:12:39,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294825312] [2020-10-15 22:12:39,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:39,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:39,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192576447] [2020-10-15 22:12:39,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:39,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:39,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:39,871 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-10-15 22:12:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:39,892 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-10-15 22:12:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:12:39,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:12:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:39,902 INFO L225 Difference]: With dead ends: 218 [2020-10-15 22:12:39,902 INFO L226 Difference]: Without dead ends: 146 [2020-10-15 22:12:39,902 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 22:12:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-15 22:12:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-15 22:12:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 22:12:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-15 22:12:39,911 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-10-15 22:12:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:39,911 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-15 22:12:39,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-15 22:12:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:12:39,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:39,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:39,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:12:39,913 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-10-15 22:12:39,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:39,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126536055] [2020-10-15 22:12:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,017 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 22:12:40,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126536055] [2020-10-15 22:12:40,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:40,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115378808] [2020-10-15 22:12:40,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:40,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:40,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:40,020 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-10-15 22:12:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,051 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-10-15 22:12:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:40,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:12:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,052 INFO L225 Difference]: With dead ends: 167 [2020-10-15 22:12:40,053 INFO L226 Difference]: Without dead ends: 125 [2020-10-15 22:12:40,053 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 22:12:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-15 22:12:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-15 22:12:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-15 22:12:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-10-15 22:12:40,059 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-10-15 22:12:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,059 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-10-15 22:12:40,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-10-15 22:12:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:12:40,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:40,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:40,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:12:40,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:40,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-10-15 22:12:40,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:40,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449242693] [2020-10-15 22:12:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,128 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 22:12:40,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449242693] [2020-10-15 22:12:40,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:40,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593156042] [2020-10-15 22:12:40,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:40,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:40,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:40,130 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-10-15 22:12:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,171 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-10-15 22:12:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:40,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 22:12:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,172 INFO L225 Difference]: With dead ends: 121 [2020-10-15 22:12:40,172 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 22:12:40,173 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 22:12:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 22:12:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-15 22:12:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 22:12:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-10-15 22:12:40,177 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-10-15 22:12:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,177 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-10-15 22:12:40,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-10-15 22:12:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:12:40,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:40,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:40,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:12:40,179 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-10-15 22:12:40,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:40,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494118656] [2020-10-15 22:12:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,230 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 22:12:40,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494118656] [2020-10-15 22:12:40,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:40,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415030779] [2020-10-15 22:12:40,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:12:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:12:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:12:40,233 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-10-15 22:12:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,245 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-10-15 22:12:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:12:40,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-15 22:12:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,247 INFO L225 Difference]: With dead ends: 110 [2020-10-15 22:12:40,247 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 22:12:40,248 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 22:12:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 22:12:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-15 22:12:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-15 22:12:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-10-15 22:12:40,254 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-10-15 22:12:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,254 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-10-15 22:12:40,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:12:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-10-15 22:12:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:40,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:40,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:40,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:12:40,259 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:40,259 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-10-15 22:12:40,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:40,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464084132] [2020-10-15 22:12:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,315 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 22:12:40,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464084132] [2020-10-15 22:12:40,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:40,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152874701] [2020-10-15 22:12:40,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:12:40,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:12:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:12:40,319 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-10-15 22:12:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,331 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-10-15 22:12:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:12:40,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-15 22:12:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,332 INFO L225 Difference]: With dead ends: 104 [2020-10-15 22:12:40,332 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 22:12:40,333 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 22:12:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 22:12:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-15 22:12:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 22:12:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-15 22:12:40,335 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-10-15 22:12:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,335 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-15 22:12:40,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:12:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-15 22:12:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:40,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:40,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:12:40,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-10-15 22:12:40,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:40,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039392155] [2020-10-15 22:12:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,390 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 22:12:40,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039392155] [2020-10-15 22:12:40,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:40,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46426914] [2020-10-15 22:12:40,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:40,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:40,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:40,392 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-10-15 22:12:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,407 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-10-15 22:12:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:40,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:12:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,409 INFO L225 Difference]: With dead ends: 71 [2020-10-15 22:12:40,409 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 22:12:40,409 INFO L677 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 [2020-10-15 22:12:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 22:12:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-15 22:12:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 22:12:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-10-15 22:12:40,412 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-10-15 22:12:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,412 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-10-15 22:12:40,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-10-15 22:12:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:40,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:40,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:40,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:12:40,413 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-10-15 22:12:40,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:40,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144322367] [2020-10-15 22:12:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:40,473 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 22:12:40,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144322367] [2020-10-15 22:12:40,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:40,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:40,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362222717] [2020-10-15 22:12:40,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:12:40,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:12:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:12:40,476 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-10-15 22:12:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:40,511 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-15 22:12:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:40,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 22:12:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:40,512 INFO L225 Difference]: With dead ends: 58 [2020-10-15 22:12:40,512 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:12:40,513 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 22:12:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:12:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:12:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:12:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:12:40,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-15 22:12:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:40,514 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:12:40,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:12:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:12:40,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:12:40,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:12:40,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:12:40 BasicIcfg [2020-10-15 22:12:40,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:12:40,520 INFO L168 Benchmark]: Toolchain (without parser) took 4019.79 ms. Allocated memory was 257.4 MB in the beginning and 374.9 MB in the end (delta: 117.4 MB). Free memory was 210.1 MB in the beginning and 243.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,521 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 257.4 MB. Free memory is still 231.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:12:40,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.61 ms. Allocated memory was 257.4 MB in the beginning and 329.3 MB in the end (delta: 71.8 MB). Free memory was 210.1 MB in the beginning and 282.7 MB in the end (delta: -72.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.07 ms. Allocated memory is still 329.3 MB. Free memory was 282.7 MB in the beginning and 280.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,523 INFO L168 Benchmark]: Boogie Preprocessor took 22.97 ms. Allocated memory is still 329.3 MB. Free memory was 280.1 MB in the beginning and 277.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,524 INFO L168 Benchmark]: RCFGBuilder took 401.96 ms. Allocated memory is still 329.3 MB. Free memory was 277.6 MB in the beginning and 255.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,524 INFO L168 Benchmark]: TraceAbstraction took 2899.73 ms. Allocated memory was 329.3 MB in the beginning and 374.9 MB in the end (delta: 45.6 MB). Free memory was 255.8 MB in the beginning and 243.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 58.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:40,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 257.4 MB. Free memory is still 231.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 622.61 ms. Allocated memory was 257.4 MB in the beginning and 329.3 MB in the end (delta: 71.8 MB). Free memory was 210.1 MB in the beginning and 282.7 MB in the end (delta: -72.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 68.07 ms. Allocated memory is still 329.3 MB. Free memory was 282.7 MB in the beginning and 280.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 22.97 ms. Allocated memory is still 329.3 MB. Free memory was 280.1 MB in the beginning and 277.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 401.96 ms. Allocated memory is still 329.3 MB. Free memory was 277.6 MB in the beginning and 255.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2899.73 ms. Allocated memory was 329.3 MB in the beginning and 374.9 MB in the end (delta: 45.6 MB). Free memory was 255.8 MB in the beginning and 243.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 58.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 779 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 75 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 54 TotalNumberOfCompositions, 1902 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 2936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...