/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:40:17,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:40:17,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:40:17,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:40:17,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:40:17,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:40:17,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:40:17,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:40:17,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:40:17,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:40:17,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:40:17,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:40:17,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:40:17,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:40:17,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:40:17,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:40:17,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:40:17,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:40:17,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:40:17,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:40:17,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:40:17,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:40:17,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:40:17,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:40:17,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:40:17,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:40:17,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:40:17,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:40:17,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:40:17,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:40:17,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:40:17,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:40:17,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:40:17,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:40:17,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:40:17,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:40:17,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:40:17,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:40:17,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:40:17,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:40:17,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:40:17,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:40:17,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:40:17,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:40:17,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:40:17,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:40:17,396 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:40:17,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:40:17,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:40:17,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:40:17,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:40:17,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:40:17,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:40:17,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:40:17,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:40:17,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:40:17,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:40:17,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:40:17,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:40:17,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:40:17,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:40:17,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:40:17,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:40:17,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:40:17,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:40:17,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:40:17,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:40:17,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:40:17,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:40:17,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:40:17,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:40:17,716 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:40:17,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-04-18 02:40:17,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a568504ee/7c3d75bfbc8e49d5b04654cdafe052c0/FLAG39714ec7b [2020-04-18 02:40:18,304 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:40:18,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-04-18 02:40:18,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a568504ee/7c3d75bfbc8e49d5b04654cdafe052c0/FLAG39714ec7b [2020-04-18 02:40:18,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a568504ee/7c3d75bfbc8e49d5b04654cdafe052c0 [2020-04-18 02:40:18,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:40:18,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:40:18,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:40:18,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:40:18,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:40:18,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:40:18" (1/1) ... [2020-04-18 02:40:18,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574de9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:18, skipping insertion in model container [2020-04-18 02:40:18,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:40:18" (1/1) ... [2020-04-18 02:40:18,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:40:18,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:40:19,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:40:19,261 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:40:19,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:40:19,413 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:40:19,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19 WrapperNode [2020-04-18 02:40:19,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:40:19,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:40:19,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:40:19,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:40:19,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:40:19,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:40:19,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:40:19,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:40:19,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... [2020-04-18 02:40:19,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:40:19,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:40:19,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:40:19,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:40:19,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:40:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:40:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:40:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:40:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:40:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:40:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:40:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:40:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:40:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:40:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:40:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:40:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:40:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:40:19,572 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:40:19,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:40:19,975 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:40:19,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:40:19 BoogieIcfgContainer [2020-04-18 02:40:19,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:40:19,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:40:19,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:40:19,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:40:19,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:40:18" (1/3) ... [2020-04-18 02:40:19,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb0651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:40:19, skipping insertion in model container [2020-04-18 02:40:19,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:40:19" (2/3) ... [2020-04-18 02:40:19,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb0651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:40:19, skipping insertion in model container [2020-04-18 02:40:19,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:40:19" (3/3) ... [2020-04-18 02:40:19,988 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-04-18 02:40:19,997 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:40:19,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:40:20,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:40:20,006 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:40:20,029 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,030 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,030 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,031 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,031 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,031 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,032 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,032 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,032 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,032 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,033 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,033 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,034 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,034 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,034 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,034 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,035 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,035 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,040 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,040 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,046 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,046 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,047 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,047 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,049 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,049 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,050 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,050 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:40:20,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:40:20,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:40:20,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:40:20,087 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:40:20,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:40:20,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:40:20,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:40:20,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:40:20,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:40:20,104 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 02:40:20,106 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 02:40:20,150 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 02:40:20,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:40:20,155 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:40:20,158 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 02:40:20,178 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 02:40:20,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:40:20,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:40:20,182 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 02:40:20,183 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:40:21,507 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:40:21,625 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2133 [2020-04-18 02:40:21,626 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:40:21,630 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 02:40:21,653 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 02:40:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 02:40:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:40:21,663 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:21,664 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:21,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-04-18 02:40:21,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:21,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925629438] [2020-04-18 02:40:21,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:21,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925629438] [2020-04-18 02:40:21,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:21,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:40:21,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388846239] [2020-04-18 02:40:21,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:40:21,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:40:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:40:21,945 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 02:40:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,021 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-04-18 02:40:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:40:22,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:40:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,060 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:40:22,060 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 02:40:22,065 INFO L678 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 [2020-04-18 02:40:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 02:40:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 02:40:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 02:40:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-04-18 02:40:22,143 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-04-18 02:40:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,144 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-04-18 02:40:22,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:40:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-04-18 02:40:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:40:22,146 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-04-18 02:40:22,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339504813] [2020-04-18 02:40:22,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339504813] [2020-04-18 02:40:22,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:40:22,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221488098] [2020-04-18 02:40:22,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:40:22,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:40:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:40:22,261 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 3 states. [2020-04-18 02:40:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,274 INFO L93 Difference]: Finished difference Result 160 states and 419 transitions. [2020-04-18 02:40:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:40:22,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:40:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,277 INFO L225 Difference]: With dead ends: 160 [2020-04-18 02:40:22,277 INFO L226 Difference]: Without dead ends: 160 [2020-04-18 02:40:22,278 INFO L678 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 [2020-04-18 02:40:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-04-18 02:40:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-04-18 02:40:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-04-18 02:40:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 419 transitions. [2020-04-18 02:40:22,293 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 419 transitions. Word has length 9 [2020-04-18 02:40:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,293 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 419 transitions. [2020-04-18 02:40:22,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:40:22,294 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 419 transitions. [2020-04-18 02:40:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:40:22,295 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,295 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 1 times [2020-04-18 02:40:22,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151252765] [2020-04-18 02:40:22,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151252765] [2020-04-18 02:40:22,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:22,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113443461] [2020-04-18 02:40:22,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:22,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:22,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:22,386 INFO L87 Difference]: Start difference. First operand 160 states and 419 transitions. Second operand 4 states. [2020-04-18 02:40:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,411 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-04-18 02:40:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:40:22,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:40:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,413 INFO L225 Difference]: With dead ends: 220 [2020-04-18 02:40:22,413 INFO L226 Difference]: Without dead ends: 148 [2020-04-18 02:40:22,414 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-18 02:40:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-04-18 02:40:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-04-18 02:40:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-04-18 02:40:22,426 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 10 [2020-04-18 02:40:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,426 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-04-18 02:40:22,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-04-18 02:40:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:40:22,428 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,428 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,428 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 2 times [2020-04-18 02:40:22,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451146178] [2020-04-18 02:40:22,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451146178] [2020-04-18 02:40:22,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:22,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133523401] [2020-04-18 02:40:22,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:22,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:22,509 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 4 states. [2020-04-18 02:40:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,564 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-04-18 02:40:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:40:22,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:40:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,566 INFO L225 Difference]: With dead ends: 168 [2020-04-18 02:40:22,566 INFO L226 Difference]: Without dead ends: 126 [2020-04-18 02:40:22,566 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-18 02:40:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-18 02:40:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-18 02:40:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-04-18 02:40:22,577 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-04-18 02:40:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,577 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-04-18 02:40:22,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-04-18 02:40:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:40:22,579 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,579 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 1 times [2020-04-18 02:40:22,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458854920] [2020-04-18 02:40:22,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458854920] [2020-04-18 02:40:22,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:40:22,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554138964] [2020-04-18 02:40:22,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:40:22,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:40:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:22,637 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand 5 states. [2020-04-18 02:40:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,677 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 02:40:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:40:22,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:40:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,680 INFO L225 Difference]: With dead ends: 121 [2020-04-18 02:40:22,680 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 02:40:22,681 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:40:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 02:40:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 02:40:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 02:40:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 02:40:22,687 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-04-18 02:40:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,687 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 02:40:22,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:40:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 02:40:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:40:22,689 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,689 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,689 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-04-18 02:40:22,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280632220] [2020-04-18 02:40:22,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280632220] [2020-04-18 02:40:22,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:40:22,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749623680] [2020-04-18 02:40:22,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:40:22,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:40:22,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:40:22,767 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 6 states. [2020-04-18 02:40:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,832 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-04-18 02:40:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:40:22,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-18 02:40:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,834 INFO L225 Difference]: With dead ends: 87 [2020-04-18 02:40:22,834 INFO L226 Difference]: Without dead ends: 78 [2020-04-18 02:40:22,835 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:40:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-04-18 02:40:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-04-18 02:40:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-04-18 02:40:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-04-18 02:40:22,840 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-04-18 02:40:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,840 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-04-18 02:40:22,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:40:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-04-18 02:40:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:40:22,841 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,841 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,842 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-04-18 02:40:22,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393673815] [2020-04-18 02:40:22,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393673815] [2020-04-18 02:40:22,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:40:22,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835597180] [2020-04-18 02:40:22,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:40:22,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:40:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:40:22,880 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 4 states. [2020-04-18 02:40:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,894 INFO L93 Difference]: Finished difference Result 91 states and 183 transitions. [2020-04-18 02:40:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:40:22,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-04-18 02:40:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,895 INFO L225 Difference]: With dead ends: 91 [2020-04-18 02:40:22,895 INFO L226 Difference]: Without dead ends: 33 [2020-04-18 02:40:22,896 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:40:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-18 02:40:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-18 02:40:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-18 02:40:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-18 02:40:22,898 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-04-18 02:40:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,898 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-18 02:40:22,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:40:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 02:40:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:40:22,899 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:40:22,899 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:40:22,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:40:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:40:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash -867586631, now seen corresponding path program 2 times [2020-04-18 02:40:22,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:40:22,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66686471] [2020-04-18 02:40:22,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:40:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:40:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:40:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66686471] [2020-04-18 02:40:22,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:40:22,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:40:22,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990025892] [2020-04-18 02:40:22,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:40:22,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:40:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:40:22,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:40:22,930 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 3 states. [2020-04-18 02:40:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:40:22,957 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-18 02:40:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:40:22,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-18 02:40:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:40:22,958 INFO L225 Difference]: With dead ends: 32 [2020-04-18 02:40:22,958 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:40:22,958 INFO L678 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 [2020-04-18 02:40:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:40:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:40:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:40:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:40:22,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 02:40:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:40:22,960 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:40:22,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:40:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:40:22,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:40:22,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:40:22 BasicIcfg [2020-04-18 02:40:22,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:40:22,967 INFO L168 Benchmark]: Toolchain (without parser) took 4351.65 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 102.4 MB in the beginning and 212.7 MB in the end (delta: -110.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:40:22,968 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:40:22,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.55 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 160.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:22,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:22,970 INFO L168 Benchmark]: Boogie Preprocessor took 39.07 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:22,971 INFO L168 Benchmark]: RCFGBuilder took 474.74 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 135.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:40:22,972 INFO L168 Benchmark]: TraceAbstraction took 2983.94 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 134.4 MB in the beginning and 212.7 MB in the end (delta: -78.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:40:22,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.55 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 160.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.07 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.74 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 135.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2983.94 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 134.4 MB in the beginning and 212.7 MB in the end (delta: -78.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 583 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2133 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 142 SDtfs, 123 SDslu, 180 SDs, 0 SdLazy, 103 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2713 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...