/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/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:33:07,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:33:07,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:33:07,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:33:07,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:33:07,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:33:07,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:33:07,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:33:07,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:33:07,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:33:07,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:33:07,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:33:07,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:33:07,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:33:07,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:33:07,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:33:07,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:33:07,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:33:07,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:33:07,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:33:07,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:33:07,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:33:07,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:33:07,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:33:07,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:33:07,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:33:07,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:33:07,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:33:07,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:33:07,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:33:07,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:33:07,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:33:07,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:33:07,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:33:07,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:33:07,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:33:07,329 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 18:33:07,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:33:07,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:33:07,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:33:07,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:33:07,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:33:07,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:33:07,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:33:07,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:33:07,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:33:07,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:33:07,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:33:07,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:33:07,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:33:07,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:33:07,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:33:07,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:33:07,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:33:07,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:33:07,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:33:07,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:33:07,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:33:07,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:33:07,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:33:07,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:33:07,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:33:07,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:33:07,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:33:07,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:33:07,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:33:07,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:33:07,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-15 18:33:07,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e179238ef/d92109d58d3748c88f8202680e109be5/FLAG9e019252e [2020-10-15 18:33:08,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:33:08,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-15 18:33:08,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e179238ef/d92109d58d3748c88f8202680e109be5/FLAG9e019252e [2020-10-15 18:33:08,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e179238ef/d92109d58d3748c88f8202680e109be5 [2020-10-15 18:33:08,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:33:08,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:33:08,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:33:08,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:33:08,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:33:08,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:33:08" (1/1) ... [2020-10-15 18:33:08,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571cca8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:08, skipping insertion in model container [2020-10-15 18:33:08,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:33:08" (1/1) ... [2020-10-15 18:33:08,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:33:08,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:33:09,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:33:09,069 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:33:09,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:33:09,195 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:33:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09 WrapperNode [2020-10-15 18:33:09,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:33:09,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:33:09,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:33:09,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:33:09,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:33:09,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:33:09,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:33:09,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:33:09,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (1/1) ... [2020-10-15 18:33:09,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:33:09,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:33:09,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:33:09,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:33:09,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (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 18:33:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:33:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:33:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:33:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:33:09,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:33:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:33:09,339 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:33:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:33:09,339 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:33:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:33:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:33:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:33:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:33:09,342 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 18:33:09,667 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:33:09,668 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:33:09,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:33:09 BoogieIcfgContainer [2020-10-15 18:33:09,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:33:09,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:33:09,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:33:09,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:33:09,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:33:08" (1/3) ... [2020-10-15 18:33:09,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a9fdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:33:09, skipping insertion in model container [2020-10-15 18:33:09,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:33:09" (2/3) ... [2020-10-15 18:33:09,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a9fdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:33:09, skipping insertion in model container [2020-10-15 18:33:09,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:33:09" (3/3) ... [2020-10-15 18:33:09,678 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-10-15 18:33:09,688 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:33:09,689 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:33:09,695 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:33:09,696 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:33:09,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,725 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,725 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,727 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,727 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,729 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,729 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,743 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:33:09,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:33:09,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:33:09,786 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:33:09,786 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:33:09,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:33:09,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:33:09,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:33:09,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:33:09,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:33:09,800 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:33:09,802 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-15 18:33:09,804 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-15 18:33:09,806 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-15 18:33:09,850 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-15 18:33:09,851 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:33:09,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:33:09,859 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:33:11,258 INFO L132 LiptonReduction]: Checked pairs total: 2579 [2020-10-15 18:33:11,258 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 18:33:11,265 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-15 18:33:11,295 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-15 18:33:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-15 18:33:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:33:11,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:11,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:11,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-10-15 18:33:11,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:11,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696462079] [2020-10-15 18:33:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:11,489 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 18:33:11,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696462079] [2020-10-15 18:33:11,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:11,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:11,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303308865] [2020-10-15 18:33:11,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 18:33:11,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 18:33:11,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 18:33:11,515 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-15 18:33:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:11,560 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-15 18:33:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 18:33:11,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-15 18:33:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:11,579 INFO L225 Difference]: With dead ends: 362 [2020-10-15 18:33:11,580 INFO L226 Difference]: Without dead ends: 298 [2020-10-15 18:33:11,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 18:33:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-15 18:33:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-15 18:33:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-15 18:33:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-15 18:33:11,662 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-15 18:33:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:11,663 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-15 18:33:11,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 18:33:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-15 18:33:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:33:11,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:11,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:11,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:33:11,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-10-15 18:33:11,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:11,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799076004] [2020-10-15 18:33:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:11,810 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 18:33:11,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799076004] [2020-10-15 18:33:11,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:11,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:11,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560348504] [2020-10-15 18:33:11,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:11,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:11,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:11,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:11,815 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-15 18:33:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:11,856 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-15 18:33:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:11,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 18:33:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:11,861 INFO L225 Difference]: With dead ends: 330 [2020-10-15 18:33:11,861 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 18:33:11,862 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 18:33:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 18:33:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-15 18:33:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 18:33:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-15 18:33:11,887 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-15 18:33:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:11,888 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-15 18:33:11,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-15 18:33:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:33:11,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:11,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:11,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:33:11,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-10-15 18:33:11,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:11,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785529174] [2020-10-15 18:33:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,009 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 18:33:12,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785529174] [2020-10-15 18:33:12,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:33:12,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577877396] [2020-10-15 18:33:12,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:12,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:12,012 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-10-15 18:33:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,055 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-15 18:33:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:12,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 18:33:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,058 INFO L225 Difference]: With dead ends: 290 [2020-10-15 18:33:12,059 INFO L226 Difference]: Without dead ends: 242 [2020-10-15 18:33:12,059 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 18:33:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-15 18:33:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-15 18:33:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 18:33:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-15 18:33:12,084 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-15 18:33:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,084 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-15 18:33:12,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-15 18:33:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:33:12,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:33:12,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-10-15 18:33:12,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554271885] [2020-10-15 18:33:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,144 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 18:33:12,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554271885] [2020-10-15 18:33:12,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:12,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628484098] [2020-10-15 18:33:12,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:33:12,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:33:12,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:12,147 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-15 18:33:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,195 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-10-15 18:33:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:33:12,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-15 18:33:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,197 INFO L225 Difference]: With dead ends: 302 [2020-10-15 18:33:12,197 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 18:33:12,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 18:33:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 18:33:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-15 18:33:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 18:33:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-10-15 18:33:12,205 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-10-15 18:33:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,206 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-10-15 18:33:12,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:33:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-10-15 18:33:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:33:12,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:33:12,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,208 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-10-15 18:33:12,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241720278] [2020-10-15 18:33:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,258 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 18:33:12,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241720278] [2020-10-15 18:33:12,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:12,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479211048] [2020-10-15 18:33:12,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:33:12,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:33:12,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:12,261 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-10-15 18:33:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,303 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-15 18:33:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:33:12,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 18:33:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,304 INFO L225 Difference]: With dead ends: 176 [2020-10-15 18:33:12,304 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 18:33:12,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 18:33:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 18:33:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 18:33:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 18:33:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-15 18:33:12,309 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-10-15 18:33:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,310 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-15 18:33:12,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:33:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-15 18:33:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:33:12,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:33:12,311 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,312 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-10-15 18:33:12,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530266871] [2020-10-15 18:33:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,369 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 18:33:12,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530266871] [2020-10-15 18:33:12,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:33:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243840614] [2020-10-15 18:33:12,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:33:12,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:33:12,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:33:12,371 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-15 18:33:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,399 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-15 18:33:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:12,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 18:33:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,400 INFO L225 Difference]: With dead ends: 91 [2020-10-15 18:33:12,400 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 18:33:12,401 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 18:33:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 18:33:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 18:33:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 18:33:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-15 18:33:12,404 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-15 18:33:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,404 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-15 18:33:12,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:33:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-15 18:33:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:33:12,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:33:12,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,406 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-10-15 18:33:12,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567714795] [2020-10-15 18:33:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,464 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 18:33:12,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567714795] [2020-10-15 18:33:12,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:33:12,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450860158] [2020-10-15 18:33:12,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:33:12,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:33:12,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:12,467 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-10-15 18:33:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,501 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-15 18:33:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:33:12,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 18:33:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,502 INFO L225 Difference]: With dead ends: 65 [2020-10-15 18:33:12,502 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 18:33:12,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:33:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 18:33:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-15 18:33:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 18:33:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-15 18:33:12,505 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-15 18:33:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,505 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-15 18:33:12,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:33:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-15 18:33:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 18:33:12,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:33:12,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-10-15 18:33:12,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657502031] [2020-10-15 18:33:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,582 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 18:33:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657502031] [2020-10-15 18:33:12,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 18:33:12,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581976752] [2020-10-15 18:33:12,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:33:12,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:33:12,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:33:12,585 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-10-15 18:33:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,636 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-15 18:33:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:33:12,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 18:33:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,637 INFO L225 Difference]: With dead ends: 43 [2020-10-15 18:33:12,637 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 18:33:12,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:33:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 18:33:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-15 18:33:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 18:33:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-15 18:33:12,639 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-15 18:33:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,640 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-15 18:33:12,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:33:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-15 18:33:12,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 18:33:12,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:33:12,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:33:12,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:33:12,643 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:33:12,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:33:12,643 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-10-15 18:33:12,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:33:12,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016192243] [2020-10-15 18:33:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:33:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:33:12,695 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 18:33:12,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016192243] [2020-10-15 18:33:12,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:33:12,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:33:12,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336296117] [2020-10-15 18:33:12,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:33:12,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:33:12,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:33:12,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:33:12,697 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-15 18:33:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:33:12,720 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-15 18:33:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:33:12,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-15 18:33:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:33:12,720 INFO L225 Difference]: With dead ends: 36 [2020-10-15 18:33:12,721 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:33:12,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:33:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:33:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:33:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:33:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:33:12,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-15 18:33:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:33:12,722 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:33:12,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:33:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:33:12,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:33:12,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:33:12,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:33:12 BasicIcfg [2020-10-15 18:33:12,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:33:12,729 INFO L168 Benchmark]: Toolchain (without parser) took 4183.52 ms. Allocated memory was 253.2 MB in the beginning and 374.9 MB in the end (delta: 121.6 MB). Free memory was 208.3 MB in the beginning and 239.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 90.4 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:12,730 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:33:12,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.79 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 208.3 MB in the beginning and 277.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:12,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.28 ms. Allocated memory is still 322.4 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:33:12,732 INFO L168 Benchmark]: Boogie Preprocessor took 24.10 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:12,732 INFO L168 Benchmark]: RCFGBuilder took 397.13 ms. Allocated memory is still 322.4 MB. Free memory was 272.7 MB in the beginning and 250.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:12,733 INFO L168 Benchmark]: TraceAbstraction took 3055.28 ms. Allocated memory was 322.4 MB in the beginning and 374.9 MB in the end (delta: 52.4 MB). Free memory was 250.6 MB in the beginning and 239.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 14.2 GB. [2020-10-15 18:33:12,737 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 649.79 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 208.3 MB in the beginning and 277.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.28 ms. Allocated memory is still 322.4 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.10 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 397.13 ms. Allocated memory is still 322.4 MB. Free memory was 272.7 MB in the beginning and 250.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3055.28 ms. Allocated memory was 322.4 MB in the beginning and 374.9 MB in the end (delta: 52.4 MB). Free memory was 250.6 MB in the beginning and 239.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 890 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 79 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2579 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 188 SDtfs, 183 SDslu, 268 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4062 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...