/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/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:53:16,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:53:16,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:53:16,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:53:16,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:53:16,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:53:16,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:53:16,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:53:16,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:53:16,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:53:16,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:53:16,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:53:16,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:53:16,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:53:16,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:53:16,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:53:16,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:53:16,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:53:16,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:53:16,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:53:16,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:53:16,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:53:16,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:53:16,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:53:16,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:53:16,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:53:16,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:53:16,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:53:16,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:53:16,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:53:16,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:53:16,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:53:16,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:53:16,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:53:16,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:53:16,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:53:16,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:53:16,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:53:16,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:53:16,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:53:16,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:53:16,494 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 02:53:16,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:53:16,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:53:16,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:53:16,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:53:16,524 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:53:16,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:53:16,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:53:16,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:53:16,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:53:16,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:53:16,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:53:16,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:53:16,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:53:16,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:53:16,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:53:16,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:53:16,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:53:16,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:53:16,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:53:16,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:53:16,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:53:16,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:53:16,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:53:16,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:53:16,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:53:16,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:53:16,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:53:16,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:53:16,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:53:16,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:53:16,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:53:16,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:53:16,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:53:16,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:53:16,837 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:53:16,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 02:53:16,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2447c84ca/80e8766a019f41f3ab299001ff0d2777/FLAG06a8cc150 [2020-04-18 02:53:17,494 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:53:17,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 02:53:17,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2447c84ca/80e8766a019f41f3ab299001ff0d2777/FLAG06a8cc150 [2020-04-18 02:53:17,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2447c84ca/80e8766a019f41f3ab299001ff0d2777 [2020-04-18 02:53:17,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:53:17,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:53:17,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:17,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:53:17,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:53:17,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:17" (1/1) ... [2020-04-18 02:53:17,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30593eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:17, skipping insertion in model container [2020-04-18 02:53:17,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:17" (1/1) ... [2020-04-18 02:53:17,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:53:17,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:53:18,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:18,347 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:53:18,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:18,517 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:53:18,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18 WrapperNode [2020-04-18 02:53:18,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:18,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:18,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:53:18,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:53:18,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:18,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:53:18,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:53:18,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:53:18,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (1/1) ... [2020-04-18 02:53:18,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:53:18,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:53:18,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:53:18,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:53:18,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (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 02:53:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:53:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:53:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:53:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:53:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:53:18,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:53:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:53:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:53:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:53:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:53:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:53:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:53:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:53:18,687 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 02:53:19,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:53:19,090 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:53:19,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:19 BoogieIcfgContainer [2020-04-18 02:53:19,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:53:19,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:53:19,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:53:19,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:53:19,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:53:17" (1/3) ... [2020-04-18 02:53:19,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3a745d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:19, skipping insertion in model container [2020-04-18 02:53:19,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:18" (2/3) ... [2020-04-18 02:53:19,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3a745d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:19, skipping insertion in model container [2020-04-18 02:53:19,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:19" (3/3) ... [2020-04-18 02:53:19,103 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-04-18 02:53:19,114 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:53:19,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:53:19,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:53:19,124 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:53:19,148 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,150 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,150 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,152 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,154 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,154 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,154 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,154 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,155 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,155 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,155 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,155 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,156 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,156 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,156 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,156 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,161 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,161 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,171 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,172 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,172 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,173 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,175 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,175 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,176 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,176 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:19,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:53:19,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:53:19,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:53:19,206 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:53:19,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:53:19,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:53:19,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:53:19,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:53:19,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:53:19,223 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:19,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:19,270 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:53:19,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:19,275 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:53:19,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:53:19,300 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:53:19,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:19,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:53:19,303 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:53:19,304 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:53:20,680 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:53:20,835 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-18 02:53:20,932 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 02:53:20,932 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 02:53:20,936 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 02:53:20,962 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:53:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:53:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:53:20,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:20,974 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:20,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 02:53:20,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:20,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215852998] [2020-04-18 02:53:20,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:21,186 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 02:53:21,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215852998] [2020-04-18 02:53:21,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:21,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:53:21,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342728503] [2020-04-18 02:53:21,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:53:21,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:21,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:53:21,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:53:21,212 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:53:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:21,257 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:53:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:53:21,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:53:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:21,275 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:53:21,275 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:53:21,277 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 02:53:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:53:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:53:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:53:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:53:21,341 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:53:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:21,342 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:53:21,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:53:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:53:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:53:21,344 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:21,344 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:21,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 02:53:21,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:21,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936656975] [2020-04-18 02:53:21,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:21,421 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 02:53:21,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936656975] [2020-04-18 02:53:21,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:21,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:53:21,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379793234] [2020-04-18 02:53:21,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:53:21,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:21,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:53:21,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:53:21,424 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 02:53:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:21,472 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 02:53:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:53:21,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:53:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:21,476 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:53:21,477 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:53:21,478 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 02:53:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:53:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:53:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:53:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 02:53:21,509 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 02:53:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:21,511 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 02:53:21,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:53:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 02:53:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:53:21,516 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:21,516 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:21,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 02:53:21,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:21,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913095908] [2020-04-18 02:53:21,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:21,637 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 02:53:21,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913095908] [2020-04-18 02:53:21,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:21,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:53:21,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894238916] [2020-04-18 02:53:21,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:21,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:21,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:21,639 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-18 02:53:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:21,687 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 02:53:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:53:21,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:53:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:21,689 INFO L225 Difference]: With dead ends: 165 [2020-04-18 02:53:21,689 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 02:53:21,689 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 02:53:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 02:53:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 02:53:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 02:53:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 02:53:21,699 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 02:53:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:21,699 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 02:53:21,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 02:53:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:53:21,701 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:21,701 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:21,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 02:53:21,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:21,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-18 02:53:21,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:21,816 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 02:53:21,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-18 02:53:21,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:21,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:21,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403430790] [2020-04-18 02:53:21,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:53:21,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:21,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:53:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:53:21,820 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-18 02:53:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:21,867 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 02:53:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:53:21,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:53:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:21,869 INFO L225 Difference]: With dead ends: 111 [2020-04-18 02:53:21,869 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:53:21,869 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 02:53:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:53:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:53:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:53:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 02:53:21,876 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 02:53:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:21,877 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 02:53:21,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:53:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 02:53:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:53:21,878 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:21,878 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:21,879 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 02:53:21,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:21,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957665039] [2020-04-18 02:53:21,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:21,938 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 02:53:21,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957665039] [2020-04-18 02:53:21,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:21,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:53:21,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913194982] [2020-04-18 02:53:21,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:53:21,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:53:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:53:21,941 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-18 02:53:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:21,997 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 02:53:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:53:21,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:53:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:21,998 INFO L225 Difference]: With dead ends: 75 [2020-04-18 02:53:21,999 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 02:53:21,999 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 02:53:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 02:53:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 02:53:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 02:53:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 02:53:22,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 02:53:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:22,004 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 02:53:22,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:53:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 02:53:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:22,005 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:22,005 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:22,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 02:53:22,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:22,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137559310] [2020-04-18 02:53:22,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:22,047 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 02:53:22,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137559310] [2020-04-18 02:53:22,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:22,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:22,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078176140] [2020-04-18 02:53:22,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:22,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:22,050 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-18 02:53:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:22,065 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-18 02:53:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:22,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:22,066 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:53:22,066 INFO L226 Difference]: Without dead ends: 48 [2020-04-18 02:53:22,066 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-18 02:53:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-18 02:53:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-18 02:53:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-18 02:53:22,070 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-18 02:53:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:22,070 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-18 02:53:22,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-18 02:53:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:22,071 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:22,071 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:22,072 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-18 02:53:22,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:22,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098723866] [2020-04-18 02:53:22,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:22,170 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 02:53:22,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098723866] [2020-04-18 02:53:22,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:22,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:22,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303573304] [2020-04-18 02:53:22,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:22,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:22,174 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-18 02:53:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:22,208 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-04-18 02:53:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:53:22,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:22,209 INFO L225 Difference]: With dead ends: 73 [2020-04-18 02:53:22,209 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 02:53:22,210 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 02:53:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 02:53:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 02:53:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 02:53:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-04-18 02:53:22,214 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-04-18 02:53:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:22,214 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-04-18 02:53:22,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-04-18 02:53:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:53:22,216 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:22,216 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:22,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-04-18 02:53:22,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:22,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079281311] [2020-04-18 02:53:22,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:22,289 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 02:53:22,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079281311] [2020-04-18 02:53:22,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:22,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:22,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640354419] [2020-04-18 02:53:22,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:22,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:22,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:22,292 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-04-18 02:53:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:22,303 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-04-18 02:53:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:22,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:53:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:22,304 INFO L225 Difference]: With dead ends: 41 [2020-04-18 02:53:22,305 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:53:22,305 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 02:53:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:53:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:53:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:53:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:53:22,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:53:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:22,306 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:53:22,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:53:22,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:53:22,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:53:22 BasicIcfg [2020-04-18 02:53:22,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:53:22,313 INFO L168 Benchmark]: Toolchain (without parser) took 4548.04 ms. Allocated memory was 137.9 MB in the beginning and 248.0 MB in the end (delta: 110.1 MB). Free memory was 99.4 MB in the beginning and 197.0 MB in the end (delta: -97.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,314 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 97.6 MB in the beginning and 157.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.70 ms. Allocated memory is still 201.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,317 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,318 INFO L168 Benchmark]: RCFGBuilder took 479.13 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 132.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:22,318 INFO L168 Benchmark]: TraceAbstraction took 3215.34 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 131.4 MB in the beginning and 197.0 MB in the end (delta: -65.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:53:22,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 97.6 MB in the beginning and 157.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.70 ms. Allocated memory is still 201.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.89 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.13 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 132.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3215.34 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 131.4 MB in the beginning and 197.0 MB in the end (delta: -65.6 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: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 156 SDtfs, 123 SDslu, 182 SDs, 0 SdLazy, 116 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 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...