/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:07:19,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:07:19,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:07:19,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:07:19,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:07:19,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:07:19,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:07:19,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:07:19,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:07:19,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:07:19,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:07:19,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:07:19,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:07:19,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:07:19,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:07:19,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:07:19,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:07:19,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:07:19,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:07:19,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:07:19,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:07:19,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:07:19,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:07:19,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:07:19,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:07:19,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:07:19,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:07:19,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:07:19,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:07:19,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:07:19,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:07:19,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:07:19,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:07:19,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:07:19,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:07:19,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:07:19,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:07:19,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:07:19,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:07:19,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:07:19,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:07:19,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:07:19,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:07:19,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:07:19,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:07:19,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:07:19,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:07:19,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:07:19,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:07:19,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:07:19,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:07:19,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:07:19,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:07:19,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:07:19,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:07:19,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:07:19,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:07:19,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:07:19,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:07:19,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:07:19,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:07:19,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:07:19,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:07:19,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:07:19,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:07:19,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:07:19,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:07:19,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:07:19,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:07:19,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:07:19,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:07:19,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:07:20,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:07:20,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:07:20,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:07:20,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:07:20,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:07:20,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:07:20,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d598ab38/48a03c460ead44988a0ce59d0fea559a/FLAGd5689d1f7 [2020-10-29 13:07:21,007 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:07:21,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:07:21,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d598ab38/48a03c460ead44988a0ce59d0fea559a/FLAGd5689d1f7 [2020-10-29 13:07:21,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d598ab38/48a03c460ead44988a0ce59d0fea559a [2020-10-29 13:07:21,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:07:21,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:07:21,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:21,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:07:21,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:07:21,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:21" (1/1) ... [2020-10-29 13:07:21,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571b4a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:21, skipping insertion in model container [2020-10-29 13:07:21,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:21" (1/1) ... [2020-10-29 13:07:21,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:07:21,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:07:21,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:22,021 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:07:22,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:22,378 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:07:22,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22 WrapperNode [2020-10-29 13:07:22,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:22,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:07:22,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:07:22,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:07:22,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... [2020-10-29 13:07:22,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:07:22,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:07:22,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:07:22,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:07:22,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:07:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:07:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:07:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:07:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:07:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:07:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:07:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:07:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:07:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:07:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:07:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:07:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:07:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:07:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:07:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:07:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:07:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:07:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:07:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:07:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:07:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:07:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:07:25,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:07:25,389 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:07:25,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:25 BoogieIcfgContainer [2020-10-29 13:07:25,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:07:25,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:07:25,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:07:25,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:07:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:07:21" (1/3) ... [2020-10-29 13:07:25,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6c288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:25, skipping insertion in model container [2020-10-29 13:07:25,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:22" (2/3) ... [2020-10-29 13:07:25,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6c288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:25, skipping insertion in model container [2020-10-29 13:07:25,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:25" (3/3) ... [2020-10-29 13:07:25,402 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:07:25,414 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:07:25,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:07:25,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:07:25,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:07:25,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:07:25,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:07:25,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:07:25,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:07:25,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:07:25,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:07:25,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:07:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-29 13:07:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 13:07:25,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:25,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:25,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2015037424, now seen corresponding path program 1 times [2020-10-29 13:07:25,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:25,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69741054] [2020-10-29 13:07:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 13:07:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:07:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 13:07:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:31,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-29 13:07:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 13:07:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:07:32,637 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:07:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:32,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:32,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:32,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:07:32,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:32,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:32,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69741054] [2020-10-29 13:07:32,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:32,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125561636] [2020-10-29 13:07:32,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:32,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:32,835 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 4 states. [2020-10-29 13:07:34,180 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 13:07:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:40,834 INFO L93 Difference]: Finished difference Result 1104 states and 1962 transitions. [2020-10-29 13:07:40,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:40,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-10-29 13:07:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:40,887 INFO L225 Difference]: With dead ends: 1104 [2020-10-29 13:07:40,888 INFO L226 Difference]: Without dead ends: 898 [2020-10-29 13:07:40,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-29 13:07:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 895. [2020-10-29 13:07:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-10-29 13:07:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1573 transitions. [2020-10-29 13:07:41,065 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1573 transitions. Word has length 189 [2020-10-29 13:07:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:41,069 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1573 transitions. [2020-10-29 13:07:41,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1573 transitions. [2020-10-29 13:07:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 13:07:41,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:41,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:41,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:07:41,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1417379254, now seen corresponding path program 1 times [2020-10-29 13:07:41,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:41,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104476097] [2020-10-29 13:07:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:46,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 13:07:46,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:07:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 13:07:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:47,701 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:07:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:47,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:07:47,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:47,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:47,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:47,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104476097] [2020-10-29 13:07:47,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:47,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:47,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708812738] [2020-10-29 13:07:47,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:47,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:47,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:47,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:47,951 INFO L87 Difference]: Start difference. First operand 895 states and 1573 transitions. Second operand 5 states. [2020-10-29 13:07:55,612 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:07:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:55,793 INFO L93 Difference]: Finished difference Result 2605 states and 4580 transitions. [2020-10-29 13:07:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:55,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-29 13:07:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:55,812 INFO L225 Difference]: With dead ends: 2605 [2020-10-29 13:07:55,813 INFO L226 Difference]: Without dead ends: 1751 [2020-10-29 13:07:55,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-10-29 13:07:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1748. [2020-10-29 13:07:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-10-29 13:07:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 3062 transitions. [2020-10-29 13:07:55,937 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 3062 transitions. Word has length 193 [2020-10-29 13:07:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:55,939 INFO L481 AbstractCegarLoop]: Abstraction has 1748 states and 3062 transitions. [2020-10-29 13:07:55,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 3062 transitions. [2020-10-29 13:07:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 13:07:55,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:55,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:55,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:07:55,946 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:55,947 INFO L82 PathProgramCache]: Analyzing trace with hash 161240467, now seen corresponding path program 1 times [2020-10-29 13:07:55,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:55,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288219165] [2020-10-29 13:07:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 13:08:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 13:08:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:02,502 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:08:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:08:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:02,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:02,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288219165] [2020-10-29 13:08:02,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:02,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:02,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772247775] [2020-10-29 13:08:02,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:02,683 INFO L87 Difference]: Start difference. First operand 1748 states and 3062 transitions. Second operand 5 states. [2020-10-29 13:08:10,327 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:08:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:10,482 INFO L93 Difference]: Finished difference Result 5037 states and 8815 transitions. [2020-10-29 13:08:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:10,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-29 13:08:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:10,504 INFO L225 Difference]: With dead ends: 5037 [2020-10-29 13:08:10,504 INFO L226 Difference]: Without dead ends: 3403 [2020-10-29 13:08:10,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-10-29 13:08:10,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3400. [2020-10-29 13:08:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3400 states. [2020-10-29 13:08:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5924 transitions. [2020-10-29 13:08:10,730 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5924 transitions. Word has length 193 [2020-10-29 13:08:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:10,730 INFO L481 AbstractCegarLoop]: Abstraction has 3400 states and 5924 transitions. [2020-10-29 13:08:10,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5924 transitions. [2020-10-29 13:08:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 13:08:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:10,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:10,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:08:10,743 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:10,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1141443541, now seen corresponding path program 1 times [2020-10-29 13:08:10,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:10,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581985983] [2020-10-29 13:08:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:15,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:15,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 13:08:15,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:08:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:08:15,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:15,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 13:08:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:17,070 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:08:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:17,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:08:17,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:17,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:17,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581985983] [2020-10-29 13:08:17,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:17,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:17,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631755280] [2020-10-29 13:08:17,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:17,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:17,262 INFO L87 Difference]: Start difference. First operand 3400 states and 5924 transitions. Second operand 5 states. [2020-10-29 13:08:25,035 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:08:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:25,203 INFO L93 Difference]: Finished difference Result 9976 states and 17384 transitions. [2020-10-29 13:08:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:25,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-29 13:08:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:25,237 INFO L225 Difference]: With dead ends: 9976 [2020-10-29 13:08:25,238 INFO L226 Difference]: Without dead ends: 6685 [2020-10-29 13:08:25,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6685 states. [2020-10-29 13:08:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 6682. [2020-10-29 13:08:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6682 states. [2020-10-29 13:08:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 11591 transitions. [2020-10-29 13:08:25,617 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 11591 transitions. Word has length 194 [2020-10-29 13:08:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:25,618 INFO L481 AbstractCegarLoop]: Abstraction has 6682 states and 11591 transitions. [2020-10-29 13:08:25,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 11591 transitions. [2020-10-29 13:08:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 13:08:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:25,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:25,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:08:25,635 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash 123135383, now seen corresponding path program 1 times [2020-10-29 13:08:25,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:25,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484262264] [2020-10-29 13:08:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 13:08:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:08:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 13:08:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:31,973 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:08:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:32,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:32,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484262264] [2020-10-29 13:08:32,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:32,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:32,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941875109] [2020-10-29 13:08:32,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:32,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:32,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:32,128 INFO L87 Difference]: Start difference. First operand 6682 states and 11591 transitions. Second operand 5 states. [2020-10-29 13:08:39,298 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:08:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:39,518 INFO L93 Difference]: Finished difference Result 19811 states and 34379 transitions. [2020-10-29 13:08:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:39,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-29 13:08:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:39,590 INFO L225 Difference]: With dead ends: 19811 [2020-10-29 13:08:39,590 INFO L226 Difference]: Without dead ends: 13144 [2020-10-29 13:08:39,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2020-10-29 13:08:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 13141. [2020-10-29 13:08:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13141 states. [2020-10-29 13:08:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13141 states to 13141 states and 22716 transitions. [2020-10-29 13:08:40,479 INFO L78 Accepts]: Start accepts. Automaton has 13141 states and 22716 transitions. Word has length 195 [2020-10-29 13:08:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:40,480 INFO L481 AbstractCegarLoop]: Abstraction has 13141 states and 22716 transitions. [2020-10-29 13:08:40,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13141 states and 22716 transitions. [2020-10-29 13:08:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 13:08:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:40,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:40,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:08:40,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2102834087, now seen corresponding path program 1 times [2020-10-29 13:08:40,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:40,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121806916] [2020-10-29 13:08:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:45,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 13:08:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:46,882 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:08:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:46,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:46,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:46,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:08:46,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:46,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:47,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121806916] [2020-10-29 13:08:47,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:47,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:47,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791238175] [2020-10-29 13:08:47,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:47,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:47,066 INFO L87 Difference]: Start difference. First operand 13141 states and 22716 transitions. Second operand 5 states. [2020-10-29 13:08:56,025 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:08:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:56,432 INFO L93 Difference]: Finished difference Result 37615 states and 64931 transitions. [2020-10-29 13:08:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:56,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-29 13:08:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:56,502 INFO L225 Difference]: With dead ends: 37615 [2020-10-29 13:08:56,502 INFO L226 Difference]: Without dead ends: 25892 [2020-10-29 13:08:56,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25892 states. [2020-10-29 13:08:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25892 to 25889. [2020-10-29 13:08:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25889 states. [2020-10-29 13:08:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25889 states to 25889 states and 44572 transitions. [2020-10-29 13:08:58,879 INFO L78 Accepts]: Start accepts. Automaton has 25889 states and 44572 transitions. Word has length 195 [2020-10-29 13:08:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:58,882 INFO L481 AbstractCegarLoop]: Abstraction has 25889 states and 44572 transitions. [2020-10-29 13:08:58,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25889 states and 44572 transitions. [2020-10-29 13:08:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 13:08:58,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:58,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:58,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:08:58,952 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash -934470345, now seen corresponding path program 1 times [2020-10-29 13:08:58,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:58,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610719549] [2020-10-29 13:08:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:04,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:04,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 13:09:04,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:09:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 13:09:04,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:04,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 13:09:04,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:05,389 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:05,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:05,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:05,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610719549] [2020-10-29 13:09:05,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:05,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:05,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838248850] [2020-10-29 13:09:05,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:05,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:05,538 INFO L87 Difference]: Start difference. First operand 25889 states and 44572 transitions. Second operand 5 states. [2020-10-29 13:09:16,601 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:09:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:17,508 INFO L93 Difference]: Finished difference Result 76012 states and 130883 transitions. [2020-10-29 13:09:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:17,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-29 13:09:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:17,648 INFO L225 Difference]: With dead ends: 76012 [2020-10-29 13:09:17,648 INFO L226 Difference]: Without dead ends: 51146 [2020-10-29 13:09:17,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51146 states. [2020-10-29 13:09:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51146 to 51143. [2020-10-29 13:09:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51143 states. [2020-10-29 13:09:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51143 states to 51143 states and 87785 transitions. [2020-10-29 13:09:22,029 INFO L78 Accepts]: Start accepts. Automaton has 51143 states and 87785 transitions. Word has length 196 [2020-10-29 13:09:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:22,029 INFO L481 AbstractCegarLoop]: Abstraction has 51143 states and 87785 transitions. [2020-10-29 13:09:22,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 51143 states and 87785 transitions. [2020-10-29 13:09:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 13:09:22,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:22,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:22,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:09:22,107 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1626244298, now seen corresponding path program 1 times [2020-10-29 13:09:22,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:22,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848475283] [2020-10-29 13:09:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:09:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:09:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 13:09:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,588 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:09:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:09:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:28,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848475283] [2020-10-29 13:09:28,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:28,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:09:28,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440200048] [2020-10-29 13:09:28,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:09:28,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:09:28,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:09:28,718 INFO L87 Difference]: Start difference. First operand 51143 states and 87785 transitions. Second operand 8 states. [2020-10-29 13:09:30,027 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:09:40,239 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:09:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:43,854 INFO L93 Difference]: Finished difference Result 93081 states and 158257 transitions. [2020-10-29 13:09:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:09:43,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-10-29 13:09:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:44,022 INFO L225 Difference]: With dead ends: 93081 [2020-10-29 13:09:44,023 INFO L226 Difference]: Without dead ends: 71510 [2020-10-29 13:09:44,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:09:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71510 states. [2020-10-29 13:09:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71510 to 55559. [2020-10-29 13:09:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55559 states. [2020-10-29 13:09:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55559 states to 55559 states and 94857 transitions. [2020-10-29 13:09:48,942 INFO L78 Accepts]: Start accepts. Automaton has 55559 states and 94857 transitions. Word has length 197 [2020-10-29 13:09:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:48,942 INFO L481 AbstractCegarLoop]: Abstraction has 55559 states and 94857 transitions. [2020-10-29 13:09:48,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:09:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 55559 states and 94857 transitions. [2020-10-29 13:09:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 13:09:48,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:48,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:48,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:09:48,995 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1781703062, now seen corresponding path program 1 times [2020-10-29 13:09:48,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:48,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391503397] [2020-10-29 13:09:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 13:09:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:55,296 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:55,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:09:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:55,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391503397] [2020-10-29 13:09:55,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:55,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:09:55,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446307011] [2020-10-29 13:09:55,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:09:55,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:55,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:09:55,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:09:55,438 INFO L87 Difference]: Start difference. First operand 55559 states and 94857 transitions. Second operand 8 states. [2020-10-29 13:09:56,639 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:10:05,935 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:10:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:09,922 INFO L93 Difference]: Finished difference Result 78393 states and 132581 transitions. [2020-10-29 13:10:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:10:09,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-10-29 13:10:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:10,050 INFO L225 Difference]: With dead ends: 78393 [2020-10-29 13:10:10,050 INFO L226 Difference]: Without dead ends: 72774 [2020-10-29 13:10:10,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:10:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72774 states. [2020-10-29 13:10:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72774 to 55751. [2020-10-29 13:10:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55751 states. [2020-10-29 13:10:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55751 states to 55751 states and 95145 transitions. [2020-10-29 13:10:14,747 INFO L78 Accepts]: Start accepts. Automaton has 55751 states and 95145 transitions. Word has length 197 [2020-10-29 13:10:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:14,748 INFO L481 AbstractCegarLoop]: Abstraction has 55751 states and 95145 transitions. [2020-10-29 13:10:14,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:10:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 55751 states and 95145 transitions. [2020-10-29 13:10:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 13:10:14,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:14,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:14,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:10:14,805 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash -511777164, now seen corresponding path program 1 times [2020-10-29 13:10:14,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:14,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696835106] [2020-10-29 13:10:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:14,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:19,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 13:10:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:10:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:21,026 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:10:21,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696835106] [2020-10-29 13:10:21,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:21,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:10:21,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724778476] [2020-10-29 13:10:21,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:10:21,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:10:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:10:21,109 INFO L87 Difference]: Start difference. First operand 55751 states and 95145 transitions. Second operand 4 states. [2020-10-29 13:10:22,225 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 13:10:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:32,939 INFO L93 Difference]: Finished difference Result 97549 states and 164845 transitions. [2020-10-29 13:10:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:10:32,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-10-29 13:10:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:33,064 INFO L225 Difference]: With dead ends: 97549 [2020-10-29 13:10:33,064 INFO L226 Difference]: Without dead ends: 75978 [2020-10-29 13:10:33,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75978 states. [2020-10-29 13:10:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75978 to 75975. [2020-10-29 13:10:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75975 states. [2020-10-29 13:10:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75975 states to 75975 states and 128617 transitions. [2020-10-29 13:10:39,085 INFO L78 Accepts]: Start accepts. Automaton has 75975 states and 128617 transitions. Word has length 197 [2020-10-29 13:10:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:39,086 INFO L481 AbstractCegarLoop]: Abstraction has 75975 states and 128617 transitions. [2020-10-29 13:10:39,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:10:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 75975 states and 128617 transitions. [2020-10-29 13:10:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-29 13:10:39,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:39,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:39,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:10:39,130 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash -403921315, now seen corresponding path program 1 times [2020-10-29 13:10:39,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:39,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747215809] [2020-10-29 13:10:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 13:10:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:45,421 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:10:45,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747215809] [2020-10-29 13:10:45,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:45,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:10:45,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874227838] [2020-10-29 13:10:45,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:10:45,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:10:45,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:10:45,532 INFO L87 Difference]: Start difference. First operand 75975 states and 128617 transitions. Second operand 4 states.