/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/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:41,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:41,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:41,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:41,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:41,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:41,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:41,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:41,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:41,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:41,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:41,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:41,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:41,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:41,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:41,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:41,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:41,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:41,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:41,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:41,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:41,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:41,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:41,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:41,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:41,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:41,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:41,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:41,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:41,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:41,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:41,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:41,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:41,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:41,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:41,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:41,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:41,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:41,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:41,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:41,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:41,407 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 02:24:41,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:41,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:41,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:41,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:41,430 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:41,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:41,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:41,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:41,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:41,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:41,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:41,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:41,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:41,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:41,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:41,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:41,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:41,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:41,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:41,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:41,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:41,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:41,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:41,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:41,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:41,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:41,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:41,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:41,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:41,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:41,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:41,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:41,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:41,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:41,739 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:41,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-04-18 02:24:41,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d3e6952/c5843957b3af4eb4b027aa8c075234e8/FLAG77623b2c0 [2020-04-18 02:24:42,366 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:42,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-04-18 02:24:42,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d3e6952/c5843957b3af4eb4b027aa8c075234e8/FLAG77623b2c0 [2020-04-18 02:24:42,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d3e6952/c5843957b3af4eb4b027aa8c075234e8 [2020-04-18 02:24:42,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:42,684 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:42,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:42,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:42,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:42,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:42" (1/1) ... [2020-04-18 02:24:42,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccfd97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:42, skipping insertion in model container [2020-04-18 02:24:42,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:42" (1/1) ... [2020-04-18 02:24:42,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:42,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:43,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:43,325 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:43,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:43,499 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:43,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43 WrapperNode [2020-04-18 02:24:43,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:43,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:43,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:43,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:43,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:43,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:43,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:43,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:43,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (1/1) ... [2020-04-18 02:24:43,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:43,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:43,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:43,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:43,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (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 02:24:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:43,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:43,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:43,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:24:43,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:24:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:43,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:43,646 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 02:24:44,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:44,091 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:44,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:44 BoogieIcfgContainer [2020-04-18 02:24:44,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:44,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:44,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:44,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:44,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:42" (1/3) ... [2020-04-18 02:24:44,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0bf83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:44, skipping insertion in model container [2020-04-18 02:24:44,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:43" (2/3) ... [2020-04-18 02:24:44,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0bf83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:44, skipping insertion in model container [2020-04-18 02:24:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:44" (3/3) ... [2020-04-18 02:24:44,110 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-04-18 02:24:44,122 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:44,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:44,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:44,132 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:44,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,163 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,163 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,165 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,166 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,167 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,167 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,168 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,169 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,169 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,169 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,170 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,170 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,175 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,182 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,182 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,186 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,189 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,189 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,189 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,190 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:44,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:24:44,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:44,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:44,229 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:44,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:44,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:44,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:44,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:44,230 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:44,245 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:44,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:44,294 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:44,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:44,302 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:44,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:44,331 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:44,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:44,332 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:44,335 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 02:24:44,336 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:45,788 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:24:45,874 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 02:24:45,874 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 02:24:45,880 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 02:24:45,945 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 02:24:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 02:24:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:45,960 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:45,961 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:45,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 02:24:45,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:45,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287299702] [2020-04-18 02:24:45,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:46,156 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 02:24:46,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287299702] [2020-04-18 02:24:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:46,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:46,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069065427] [2020-04-18 02:24:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:24:46,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:46,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:24:46,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:46,182 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 02:24:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:46,231 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 02:24:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:24:46,233 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:24:46,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:46,261 INFO L225 Difference]: With dead ends: 850 [2020-04-18 02:24:46,261 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 02:24:46,264 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 02:24:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 02:24:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 02:24:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 02:24:46,418 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 02:24:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:46,420 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 02:24:46,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:24:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 02:24:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:46,428 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:46,428 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:46,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:46,431 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 02:24:46,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:46,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98413149] [2020-04-18 02:24:46,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:46,620 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 02:24:46,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98413149] [2020-04-18 02:24:46,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:46,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:46,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817007003] [2020-04-18 02:24:46,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:46,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:46,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:46,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:46,627 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 02:24:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:46,692 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-04-18 02:24:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:46,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:24:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:46,702 INFO L225 Difference]: With dead ends: 802 [2020-04-18 02:24:46,702 INFO L226 Difference]: Without dead ends: 658 [2020-04-18 02:24:46,703 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 02:24:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-04-18 02:24:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-04-18 02:24:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-04-18 02:24:46,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-04-18 02:24:46,739 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-04-18 02:24:46,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:46,740 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-04-18 02:24:46,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:46,740 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-04-18 02:24:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:46,748 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:46,749 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:46,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:46,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-04-18 02:24:46,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:46,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319612968] [2020-04-18 02:24:46,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:46,881 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 02:24:46,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319612968] [2020-04-18 02:24:46,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:46,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:46,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393673815] [2020-04-18 02:24:46,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:46,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:46,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:46,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:46,884 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-04-18 02:24:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:46,922 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-04-18 02:24:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:46,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:46,928 INFO L225 Difference]: With dead ends: 738 [2020-04-18 02:24:46,928 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 02:24:46,929 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 02:24:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 02:24:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-04-18 02:24:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-04-18 02:24:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-04-18 02:24:46,953 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-04-18 02:24:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:46,954 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-04-18 02:24:46,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-04-18 02:24:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:46,956 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:46,956 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:46,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:46,956 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-04-18 02:24:46,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:46,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435037232] [2020-04-18 02:24:46,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,032 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 02:24:47,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435037232] [2020-04-18 02:24:47,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:47,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990025892] [2020-04-18 02:24:47,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:47,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:47,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:47,038 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-04-18 02:24:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,068 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-04-18 02:24:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:24:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,073 INFO L225 Difference]: With dead ends: 658 [2020-04-18 02:24:47,073 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 02:24:47,074 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 02:24:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 02:24:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 02:24:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 02:24:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 02:24:47,115 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 02:24:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,115 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 02:24:47,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 02:24:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:47,117 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,117 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-18 02:24:47,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426717714] [2020-04-18 02:24:47,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,193 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 02:24:47,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426717714] [2020-04-18 02:24:47,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:47,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308534277] [2020-04-18 02:24:47,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:47,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:47,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:47,196 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 5 states. [2020-04-18 02:24:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,244 INFO L93 Difference]: Finished difference Result 874 states and 2856 transitions. [2020-04-18 02:24:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:24:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,249 INFO L225 Difference]: With dead ends: 874 [2020-04-18 02:24:47,249 INFO L226 Difference]: Without dead ends: 482 [2020-04-18 02:24:47,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-04-18 02:24:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2020-04-18 02:24:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-04-18 02:24:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1564 transitions. [2020-04-18 02:24:47,266 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1564 transitions. Word has length 14 [2020-04-18 02:24:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,267 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 1564 transitions. [2020-04-18 02:24:47,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1564 transitions. [2020-04-18 02:24:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:47,268 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,268 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,268 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash -669040336, now seen corresponding path program 2 times [2020-04-18 02:24:47,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668403442] [2020-04-18 02:24:47,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,329 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 02:24:47,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668403442] [2020-04-18 02:24:47,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:47,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071486416] [2020-04-18 02:24:47,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:47,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:47,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:47,332 INFO L87 Difference]: Start difference. First operand 482 states and 1564 transitions. Second operand 4 states. [2020-04-18 02:24:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,378 INFO L93 Difference]: Finished difference Result 718 states and 2200 transitions. [2020-04-18 02:24:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,383 INFO L225 Difference]: With dead ends: 718 [2020-04-18 02:24:47,383 INFO L226 Difference]: Without dead ends: 522 [2020-04-18 02:24:47,384 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:24:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-04-18 02:24:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 442. [2020-04-18 02:24:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-04-18 02:24:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1364 transitions. [2020-04-18 02:24:47,400 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1364 transitions. Word has length 14 [2020-04-18 02:24:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,401 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 1364 transitions. [2020-04-18 02:24:47,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1364 transitions. [2020-04-18 02:24:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:47,403 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,403 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,403 INFO L82 PathProgramCache]: Analyzing trace with hash -666682042, now seen corresponding path program 1 times [2020-04-18 02:24:47,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956417525] [2020-04-18 02:24:47,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,477 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 02:24:47,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956417525] [2020-04-18 02:24:47,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:47,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094186288] [2020-04-18 02:24:47,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:47,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:47,479 INFO L87 Difference]: Start difference. First operand 442 states and 1364 transitions. Second operand 4 states. [2020-04-18 02:24:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,506 INFO L93 Difference]: Finished difference Result 466 states and 1404 transitions. [2020-04-18 02:24:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,510 INFO L225 Difference]: With dead ends: 466 [2020-04-18 02:24:47,510 INFO L226 Difference]: Without dead ends: 418 [2020-04-18 02:24:47,511 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 02:24:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-18 02:24:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-18 02:24:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-18 02:24:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-04-18 02:24:47,526 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 14 [2020-04-18 02:24:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,526 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-04-18 02:24:47,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-04-18 02:24:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:47,528 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,528 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,528 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 1 times [2020-04-18 02:24:47,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620905207] [2020-04-18 02:24:47,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,607 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 02:24:47,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620905207] [2020-04-18 02:24:47,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:47,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460186101] [2020-04-18 02:24:47,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:47,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:47,609 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 5 states. [2020-04-18 02:24:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,649 INFO L93 Difference]: Finished difference Result 626 states and 1874 transitions. [2020-04-18 02:24:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,653 INFO L225 Difference]: With dead ends: 626 [2020-04-18 02:24:47,653 INFO L226 Difference]: Without dead ends: 326 [2020-04-18 02:24:47,653 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-04-18 02:24:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-04-18 02:24:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-04-18 02:24:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 955 transitions. [2020-04-18 02:24:47,665 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 955 transitions. Word has length 15 [2020-04-18 02:24:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,666 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 955 transitions. [2020-04-18 02:24:47,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 955 transitions. [2020-04-18 02:24:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:47,667 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,667 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,667 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,668 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-04-18 02:24:47,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955008629] [2020-04-18 02:24:47,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,741 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 02:24:47,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955008629] [2020-04-18 02:24:47,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:47,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24628763] [2020-04-18 02:24:47,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:47,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:47,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:47,745 INFO L87 Difference]: Start difference. First operand 326 states and 955 transitions. Second operand 4 states. [2020-04-18 02:24:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,797 INFO L93 Difference]: Finished difference Result 390 states and 1053 transitions. [2020-04-18 02:24:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:47,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,801 INFO L225 Difference]: With dead ends: 390 [2020-04-18 02:24:47,802 INFO L226 Difference]: Without dead ends: 293 [2020-04-18 02:24:47,802 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 02:24:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-04-18 02:24:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-04-18 02:24:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-04-18 02:24:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 804 transitions. [2020-04-18 02:24:47,816 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 804 transitions. Word has length 15 [2020-04-18 02:24:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,816 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 804 transitions. [2020-04-18 02:24:47,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 804 transitions. [2020-04-18 02:24:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:24:47,818 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,818 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,818 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 02:24:47,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385755929] [2020-04-18 02:24:47,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:47,882 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 02:24:47,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385755929] [2020-04-18 02:24:47,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:47,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:47,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258442422] [2020-04-18 02:24:47,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:47,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:47,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:47,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:47,884 INFO L87 Difference]: Start difference. First operand 293 states and 804 transitions. Second operand 5 states. [2020-04-18 02:24:47,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:47,937 INFO L93 Difference]: Finished difference Result 296 states and 728 transitions. [2020-04-18 02:24:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:47,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:24:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:47,940 INFO L225 Difference]: With dead ends: 296 [2020-04-18 02:24:47,940 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:24:47,941 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:24:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:24:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:24:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 525 transitions. [2020-04-18 02:24:47,950 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 525 transitions. Word has length 16 [2020-04-18 02:24:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:47,950 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 525 transitions. [2020-04-18 02:24:47,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 525 transitions. [2020-04-18 02:24:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:24:47,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,951 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 02:24:47,952 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 02:24:47,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980722583] [2020-04-18 02:24:47,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,054 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 02:24:48,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980722583] [2020-04-18 02:24:48,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:24:48,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764662293] [2020-04-18 02:24:48,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:48,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:48,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:48,057 INFO L87 Difference]: Start difference. First operand 218 states and 525 transitions. Second operand 6 states. [2020-04-18 02:24:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,121 INFO L93 Difference]: Finished difference Result 196 states and 441 transitions. [2020-04-18 02:24:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:48,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:24:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,123 INFO L225 Difference]: With dead ends: 196 [2020-04-18 02:24:48,123 INFO L226 Difference]: Without dead ends: 157 [2020-04-18 02:24:48,124 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-04-18 02:24:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-04-18 02:24:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-04-18 02:24:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-04-18 02:24:48,130 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 17 [2020-04-18 02:24:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,131 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-04-18 02:24:48,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-04-18 02:24:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:48,132 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,132 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,132 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-18 02:24:48,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247178651] [2020-04-18 02:24:48,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,188 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 02:24:48,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247178651] [2020-04-18 02:24:48,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:48,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724043385] [2020-04-18 02:24:48,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:48,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:48,191 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-04-18 02:24:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,233 INFO L93 Difference]: Finished difference Result 197 states and 430 transitions. [2020-04-18 02:24:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:48,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-18 02:24:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,236 INFO L225 Difference]: With dead ends: 197 [2020-04-18 02:24:48,236 INFO L226 Difference]: Without dead ends: 148 [2020-04-18 02:24:48,236 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-18 02:24:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-04-18 02:24:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:24:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-04-18 02:24:48,243 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 19 [2020-04-18 02:24:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,243 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-04-18 02:24:48,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-04-18 02:24:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:48,244 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,244 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,245 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-18 02:24:48,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879898175] [2020-04-18 02:24:48,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:48,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879898175] [2020-04-18 02:24:48,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 02:24:48,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727062142] [2020-04-18 02:24:48,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 02:24:48,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 02:24:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:48,317 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-04-18 02:24:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,388 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-04-18 02:24:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:24:48,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 02:24:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,389 INFO L225 Difference]: With dead ends: 133 [2020-04-18 02:24:48,389 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 02:24:48,390 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:24:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 02:24:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 02:24:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 02:24:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-18 02:24:48,392 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-04-18 02:24:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,392 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-18 02:24:48,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 02:24:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-18 02:24:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 02:24:48,393 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,393 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,394 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-04-18 02:24:48,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543887242] [2020-04-18 02:24:48,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,432 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 02:24:48,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543887242] [2020-04-18 02:24:48,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:48,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089224706] [2020-04-18 02:24:48,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:48,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:48,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:48,434 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-04-18 02:24:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,458 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-18 02:24:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:48,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-18 02:24:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,459 INFO L225 Difference]: With dead ends: 51 [2020-04-18 02:24:48,459 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:48,459 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 02:24:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:48,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 02:24:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,461 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:48,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:48,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:48,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:48 BasicIcfg [2020-04-18 02:24:48,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:48,468 INFO L168 Benchmark]: Toolchain (without parser) took 5799.87 ms. Allocated memory was 145.2 MB in the beginning and 286.8 MB in the end (delta: 141.6 MB). Free memory was 100.7 MB in the beginning and 192.0 MB in the end (delta: -91.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,469 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 814.92 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.7 MB in the beginning and 159.3 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.98 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,471 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,474 INFO L168 Benchmark]: RCFGBuilder took 516.76 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 131.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,475 INFO L168 Benchmark]: TraceAbstraction took 4365.27 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 131.8 MB in the beginning and 192.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:48,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 814.92 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.7 MB in the beginning and 159.3 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.98 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.76 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 131.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4365.27 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 131.8 MB in the beginning and 192.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 370 SDtfs, 337 SDslu, 612 SDs, 0 SdLazy, 246 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 84 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 7898 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...