/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:47:25,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:47:25,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:47:25,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:47:25,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:47:25,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:47:25,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:47:25,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:47:25,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:47:25,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:47:25,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:47:25,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:47:25,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:47:25,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:47:25,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:47:25,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:47:25,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:47:25,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:47:25,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:47:25,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:47:25,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:47:25,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:47:25,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:47:25,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:47:25,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:47:25,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:47:25,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:47:25,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:47:25,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:47:25,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:47:25,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:47:25,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:47:25,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:47:25,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:47:25,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:47:25,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:47:25,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:47:25,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:47:25,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:47:25,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:47:25,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:47:25,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:47:25,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:47:25,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:47:25,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:47:25,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:47:25,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:47:25,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:47:25,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:47:25,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:47:25,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:47:25,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:47:25,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:47:25,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:47:25,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:47:25,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:47:25,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:47:25,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:47:25,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:47:25,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:47:25,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:47:25,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:47:25,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:47:25,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:47:25,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:47:25,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:47:25,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:47:25,396 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:47:25,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:47:25,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:47:25,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:47:25,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:47:25,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:47:25,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-10-16 13:47:25,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de53b2bf2/a9181e14c791456e84cb5e6fb9964269/FLAG73a15ecef [2020-10-16 13:47:26,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:47:26,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-10-16 13:47:26,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de53b2bf2/a9181e14c791456e84cb5e6fb9964269/FLAG73a15ecef [2020-10-16 13:47:26,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de53b2bf2/a9181e14c791456e84cb5e6fb9964269 [2020-10-16 13:47:26,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:47:26,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:47:26,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:47:26,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:47:26,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:47:26,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:26" (1/1) ... [2020-10-16 13:47:26,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14615d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:26, skipping insertion in model container [2020-10-16 13:47:26,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:26" (1/1) ... [2020-10-16 13:47:26,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:47:26,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:47:27,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:47:27,098 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:47:27,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:47:27,268 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:47:27,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27 WrapperNode [2020-10-16 13:47:27,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:47:27,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:47:27,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:47:27,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:47:27,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:47:27,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:47:27,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:47:27,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:47:27,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... [2020-10-16 13:47:27,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:47:27,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:47:27,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:47:27,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:47:27,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:47:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:47:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:47:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:47:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:47:27,419 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:47:27,775 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:47:27,775 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:47:27,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:27 BoogieIcfgContainer [2020-10-16 13:47:27,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:47:27,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:47:27,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:47:27,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:47:27,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:47:26" (1/3) ... [2020-10-16 13:47:27,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4309d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:27, skipping insertion in model container [2020-10-16 13:47:27,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:27" (2/3) ... [2020-10-16 13:47:27,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4309d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:27, skipping insertion in model container [2020-10-16 13:47:27,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:27" (3/3) ... [2020-10-16 13:47:27,787 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-10-16 13:47:27,800 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:47:27,800 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:47:27,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:47:27,809 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:47:27,840 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,840 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,840 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,844 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:47:27,871 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:47:27,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:47:27,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:47:27,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:47:27,910 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:47:27,910 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:47:27,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:47:27,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:47:27,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:47:27,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:47:27,928 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:47:27,930 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:27,932 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:27,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 13:47:27,985 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 13:47:27,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:47:27,991 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:47:27,994 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:47:29,308 INFO L132 LiptonReduction]: Checked pairs total: 2362 [2020-10-16 13:47:29,308 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 13:47:29,315 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 13:47:29,342 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:47:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:47:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:47:29,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:29,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:29,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-10-16 13:47:29,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:29,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391529804] [2020-10-16 13:47:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:29,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391529804] [2020-10-16 13:47:29,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:29,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:47:29,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2067854563] [2020-10-16 13:47:29,615 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:29,618 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:29,632 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:47:29,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:29,636 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:29,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:47:29,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:47:29,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:29,652 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:47:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:29,687 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 13:47:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:47:29,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:47:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:29,706 INFO L225 Difference]: With dead ends: 290 [2020-10-16 13:47:29,707 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:47:29,708 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 [2020-10-16 13:47:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:47:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:47:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:47:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 13:47:29,778 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 13:47:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:29,779 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 13:47:29,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:47:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 13:47:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:47:29,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:29,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:29,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:47:29,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-10-16 13:47:29,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:29,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319080903] [2020-10-16 13:47:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:29,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319080903] [2020-10-16 13:47:29,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:29,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:47:29,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1519947936] [2020-10-16 13:47:29,840 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:29,841 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:29,844 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-16 13:47:29,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:29,851 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:29,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:47:29,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:29,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:47:29,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:29,853 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 13:47:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:29,868 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-16 13:47:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:47:29,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:47:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:29,872 INFO L225 Difference]: With dead ends: 220 [2020-10-16 13:47:29,872 INFO L226 Difference]: Without dead ends: 220 [2020-10-16 13:47:29,873 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 [2020-10-16 13:47:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-16 13:47:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-16 13:47:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 13:47:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-16 13:47:29,914 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-16 13:47:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:29,914 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-16 13:47:29,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:47:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-16 13:47:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:47:29,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:29,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:29,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:47:29,919 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-10-16 13:47:29,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:29,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979632130] [2020-10-16 13:47:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979632130] [2020-10-16 13:47:30,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:47:30,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [21668153] [2020-10-16 13:47:30,098 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,099 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,101 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-16 13:47:30,101 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,157 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:47:30,179 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:30,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:47:30,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:47:30,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:47:30,181 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-10-16 13:47:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,220 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-10-16 13:47:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:47:30,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:47:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,223 INFO L225 Difference]: With dead ends: 240 [2020-10-16 13:47:30,223 INFO L226 Difference]: Without dead ends: 176 [2020-10-16 13:47:30,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-16 13:47:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-16 13:47:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 13:47:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-10-16 13:47:30,234 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-10-16 13:47:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,235 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-10-16 13:47:30,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:47:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-10-16 13:47:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:47:30,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:30,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:30,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:47:30,237 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:30,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-10-16 13:47:30,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:30,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410594465] [2020-10-16 13:47:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410594465] [2020-10-16 13:47:30,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:47:30,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [29444530] [2020-10-16 13:47:30,273 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,274 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,275 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:47:30,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,276 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:30,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:47:30,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:47:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:30,277 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-10-16 13:47:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,286 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-10-16 13:47:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:47:30,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 13:47:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,288 INFO L225 Difference]: With dead ends: 225 [2020-10-16 13:47:30,288 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 13:47:30,289 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 [2020-10-16 13:47:30,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 13:47:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-10-16 13:47:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 13:47:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-10-16 13:47:30,297 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-10-16 13:47:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,298 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-10-16 13:47:30,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:47:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-10-16 13:47:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:47:30,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:30,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:30,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:47:30,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-10-16 13:47:30,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:30,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068946599] [2020-10-16 13:47:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068946599] [2020-10-16 13:47:30,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:47:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1477558376] [2020-10-16 13:47:30,395 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,400 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,403 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-10-16 13:47:30,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:47:30,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:47:30,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:47:30,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:47:30,492 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-10-16 13:47:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,544 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-10-16 13:47:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:47:30,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-16 13:47:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,545 INFO L225 Difference]: With dead ends: 162 [2020-10-16 13:47:30,545 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 13:47:30,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:47:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 13:47:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-16 13:47:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-16 13:47:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-10-16 13:47:30,551 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-10-16 13:47:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,551 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-10-16 13:47:30,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:47:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-10-16 13:47:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:47:30,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:30,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:30,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:47:30,553 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:30,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-10-16 13:47:30,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:30,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081760605] [2020-10-16 13:47:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081760605] [2020-10-16 13:47:30,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:47:30,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1912606473] [2020-10-16 13:47:30,585 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,586 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,591 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-10-16 13:47:30,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,622 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:30,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:47:30,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:47:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:30,624 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-10-16 13:47:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,632 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-10-16 13:47:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:47:30,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 13:47:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,633 INFO L225 Difference]: With dead ends: 157 [2020-10-16 13:47:30,634 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 13:47:30,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:47:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 13:47:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-16 13:47:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 13:47:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-10-16 13:47:30,655 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-10-16 13:47:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,656 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-10-16 13:47:30,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:47:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-10-16 13:47:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:47:30,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:30,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:30,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:47:30,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-10-16 13:47:30,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:30,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112535617] [2020-10-16 13:47:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112535617] [2020-10-16 13:47:30,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:47:30,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1573175534] [2020-10-16 13:47:30,730 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,731 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,734 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-10-16 13:47:30,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,752 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:47:30,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:47:30,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:47:30,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:47:30,754 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-10-16 13:47:30,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,805 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-10-16 13:47:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:47:30,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:47:30,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,806 INFO L225 Difference]: With dead ends: 112 [2020-10-16 13:47:30,807 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 13:47:30,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:47:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 13:47:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 13:47:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 13:47:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 13:47:30,809 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-10-16 13:47:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,810 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 13:47:30,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:47:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 13:47:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:47:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:47:30,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:47:30,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:47:30,812 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:47:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:47:30,812 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-10-16 13:47:30,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:47:30,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216577508] [2020-10-16 13:47:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:47:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:47:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:47:30,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216577508] [2020-10-16 13:47:30,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:47:30,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:47:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [156145336] [2020-10-16 13:47:30,846 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:47:30,848 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:47:30,858 INFO L258 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-10-16 13:47:30,858 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:47:30,911 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:47:30,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:47:30,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:47:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:47:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:47:30,912 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 13:47:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:47:30,923 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 13:47:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:47:30,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:47:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:47:30,924 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:47:30,924 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:47:30,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:47:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:47:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:47:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:47:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:47:30,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:47:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:47:30,926 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:47:30,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:47:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:47:30,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:47:30,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:47:30,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:47:30 BasicIcfg [2020-10-16 13:47:30,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:47:30,941 INFO L168 Benchmark]: Toolchain (without parser) took 4339.30 ms. Allocated memory was 138.9 MB in the beginning and 250.6 MB in the end (delta: 111.7 MB). Free memory was 100.0 MB in the beginning and 170.9 MB in the end (delta: -70.9 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,942 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.15 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.1 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,945 INFO L168 Benchmark]: Boogie Preprocessor took 32.33 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 157.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,949 INFO L168 Benchmark]: RCFGBuilder took 427.46 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 134.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,950 INFO L168 Benchmark]: TraceAbstraction took 3152.64 ms. Allocated memory was 202.9 MB in the beginning and 250.6 MB in the end (delta: 47.7 MB). Free memory was 134.4 MB in the beginning and 170.9 MB in the end (delta: -36.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:47:30,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.15 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.1 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.33 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 157.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.46 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 134.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3152.64 ms. Allocated memory was 202.9 MB in the beginning and 250.6 MB in the end (delta: 47.7 MB). Free memory was 134.4 MB in the beginning and 170.9 MB in the end (delta: -36.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 645 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 2362 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...