/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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:08:48,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:08:48,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:08:48,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:08:48,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:08:48,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:08:48,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:08:48,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:08:48,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:08:48,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:08:48,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:08:48,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:08:48,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:08:48,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:08:48,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:08:48,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:08:48,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:08:48,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:08:48,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:08:48,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:08:48,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:08:48,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:08:48,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:08:48,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:08:48,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:08:48,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:08:48,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:08:48,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:08:48,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:08:48,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:08:48,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:08:48,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:08:48,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:08:48,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:08:48,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:08:48,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:08:48,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:08:48,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:08:48,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:08:48,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:08:48,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:08:48,645 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 13:08:48,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:08:48,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:08:48,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:08:48,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:08:48,699 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:08:48,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:08:48,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:08:48,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:08:48,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:08:48,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:08:48,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:08:48,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:08:48,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:08:48,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:08:48,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:08:48,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:08:48,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:08:48,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:08:48,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:08:48,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:08:48,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:08:48,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:08:48,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:08:48,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:08:48,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:08:48,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:08:48,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:08:48,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:08:48,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:08:48,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:08:49,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:08:49,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:08:49,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:08:49,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:08:49,134 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:08:49,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 13:08:49,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ea2ff89/b0f83806a46244a6ab501c736378a1e7/FLAGa37c1cdf6 [2020-10-29 13:08:50,089 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:08:50,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 13:08:50,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ea2ff89/b0f83806a46244a6ab501c736378a1e7/FLAGa37c1cdf6 [2020-10-29 13:08:50,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ea2ff89/b0f83806a46244a6ab501c736378a1e7 [2020-10-29 13:08:50,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:08:50,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:08:50,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:50,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:08:50,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:08:50,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:50" (1/1) ... [2020-10-29 13:08:50,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58440e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:50, skipping insertion in model container [2020-10-29 13:08:50,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:50" (1/1) ... [2020-10-29 13:08:50,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:08:50,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:08:51,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:51,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:08:52,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:52,864 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:08:52,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52 WrapperNode [2020-10-29 13:08:52,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:52,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:08:52,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:08:52,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:08:52,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:52,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:52,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:52,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:53,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:53,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:53,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (1/1) ... [2020-10-29 13:08:53,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:08:53,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:08:53,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:08:53,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:08:53,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (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 13:08:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:08:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:08:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:08:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:08:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:08:53,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:08:53,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:08:53,207 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:08:53,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:08:53,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:08:53,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:08:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:08:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:08:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:08:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:08:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:08:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:08:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:08:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:08:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:08:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:08:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:08:57,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:08:57,465 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:08:57,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:08:57 BoogieIcfgContainer [2020-10-29 13:08:57,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:08:57,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:08:57,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:08:57,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:08:57,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:08:50" (1/3) ... [2020-10-29 13:08:57,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bd0bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:08:57, skipping insertion in model container [2020-10-29 13:08:57,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:52" (2/3) ... [2020-10-29 13:08:57,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bd0bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:08:57, skipping insertion in model container [2020-10-29 13:08:57,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:08:57" (3/3) ... [2020-10-29 13:08:57,478 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 13:08:57,490 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:08:57,496 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:08:57,509 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:08:57,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:08:57,543 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:08:57,543 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:08:57,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:08:57,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:08:57,544 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:08:57,544 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:08:57,544 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:08:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states. [2020-10-29 13:08:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-29 13:08:57,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:57,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:57,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:57,633 INFO L82 PathProgramCache]: Analyzing trace with hash 75514757, now seen corresponding path program 1 times [2020-10-29 13:08:57,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:57,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511834779] [2020-10-29 13:08:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-29 13:09:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:09:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-29 13:09:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:04,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 13:09:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:09:06,148 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:09:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:09:06,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:06,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:06,685 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 13:09:06,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511834779] [2020-10-29 13:09:06,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:06,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:06,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194308618] [2020-10-29 13:09:06,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:06,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:06,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:06,712 INFO L87 Difference]: Start difference. First operand 1375 states. Second operand 5 states. [2020-10-29 13:09:22,741 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-29 13:09:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:25,552 INFO L93 Difference]: Finished difference Result 4000 states and 7241 transitions. [2020-10-29 13:09:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:09:25,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-29 13:09:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:25,599 INFO L225 Difference]: With dead ends: 4000 [2020-10-29 13:09:25,599 INFO L226 Difference]: Without dead ends: 2666 [2020-10-29 13:09:25,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-10-29 13:09:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2613. [2020-10-29 13:09:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-29 13:09:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4286 transitions. [2020-10-29 13:09:25,869 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4286 transitions. Word has length 465 [2020-10-29 13:09:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:25,876 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 4286 transitions. [2020-10-29 13:09:25,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4286 transitions. [2020-10-29 13:09:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-29 13:09:25,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:25,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:25,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:09:25,896 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash 971466073, now seen corresponding path program 1 times [2020-10-29 13:09:25,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:25,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746632152] [2020-10-29 13:09:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 13:09:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:09:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5163 [2020-10-29 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:09:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:09:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 13:09:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:32,829 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:09:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:32,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:09:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:32,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:33,513 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 13:09:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746632152] [2020-10-29 13:09:33,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:33,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:09:33,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725022477] [2020-10-29 13:09:33,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:09:33,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:09:33,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:09:33,530 INFO L87 Difference]: Start difference. First operand 2613 states and 4286 transitions. Second operand 4 states. [2020-10-29 13:09:50,786 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 426 [2020-10-29 13:09:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:53,440 INFO L93 Difference]: Finished difference Result 7585 states and 12409 transitions. [2020-10-29 13:09:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:09:53,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2020-10-29 13:09:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:53,469 INFO L225 Difference]: With dead ends: 7585 [2020-10-29 13:09:53,470 INFO L226 Difference]: Without dead ends: 5138 [2020-10-29 13:09:53,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2020-10-29 13:09:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 5085. [2020-10-29 13:09:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5085 states. [2020-10-29 13:09:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 8308 transitions. [2020-10-29 13:09:53,694 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 8308 transitions. Word has length 467 [2020-10-29 13:09:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:53,696 INFO L481 AbstractCegarLoop]: Abstraction has 5085 states and 8308 transitions. [2020-10-29 13:09:53,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:09:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 8308 transitions. [2020-10-29 13:09:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 13:09:53,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:53,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:53,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:09:53,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:53,718 INFO L82 PathProgramCache]: Analyzing trace with hash -456912978, now seen corresponding path program 1 times [2020-10-29 13:09:53,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:53,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862499702] [2020-10-29 13:09:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:58,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-29 13:09:58,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:09:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-29 13:09:58,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:58,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 13:09:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:00,325 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:10:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:00,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:00,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:00,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:00,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:00,822 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 13:10:00,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862499702] [2020-10-29 13:10:00,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:00,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:00,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797914067] [2020-10-29 13:10:00,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:00,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:00,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:00,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:00,826 INFO L87 Difference]: Start difference. First operand 5085 states and 8308 transitions. Second operand 5 states. [2020-10-29 13:10:14,463 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-29 13:10:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:17,133 INFO L93 Difference]: Finished difference Result 14821 states and 24154 transitions. [2020-10-29 13:10:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:17,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2020-10-29 13:10:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:17,184 INFO L225 Difference]: With dead ends: 14821 [2020-10-29 13:10:17,184 INFO L226 Difference]: Without dead ends: 9948 [2020-10-29 13:10:17,195 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 13:10:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9948 states. [2020-10-29 13:10:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9948 to 9895. [2020-10-29 13:10:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9895 states. [2020-10-29 13:10:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 16068 transitions. [2020-10-29 13:10:17,624 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 16068 transitions. Word has length 468 [2020-10-29 13:10:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:17,625 INFO L481 AbstractCegarLoop]: Abstraction has 9895 states and 16068 transitions. [2020-10-29 13:10:17,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 16068 transitions. [2020-10-29 13:10:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-29 13:10:17,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:17,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:17,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:10:17,656 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:17,657 INFO L82 PathProgramCache]: Analyzing trace with hash 405315037, now seen corresponding path program 1 times [2020-10-29 13:10:17,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:17,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815076109] [2020-10-29 13:10:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:22,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:22,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 13:10:22,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:24,123 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:10:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:24,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:10:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:24,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:24,494 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 13:10:24,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815076109] [2020-10-29 13:10:24,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:24,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:24,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136980077] [2020-10-29 13:10:24,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:24,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:24,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:24,497 INFO L87 Difference]: Start difference. First operand 9895 states and 16068 transitions. Second operand 5 states. [2020-10-29 13:10:38,169 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-29 13:10:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:40,946 INFO L93 Difference]: Finished difference Result 21595 states and 35195 transitions. [2020-10-29 13:10:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:40,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 471 [2020-10-29 13:10:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:40,992 INFO L225 Difference]: With dead ends: 21595 [2020-10-29 13:10:40,993 INFO L226 Difference]: Without dead ends: 11926 [2020-10-29 13:10:41,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11926 states. [2020-10-29 13:10:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11926 to 9871. [2020-10-29 13:10:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9871 states. [2020-10-29 13:10:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 16007 transitions. [2020-10-29 13:10:41,450 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 16007 transitions. Word has length 471 [2020-10-29 13:10:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:41,451 INFO L481 AbstractCegarLoop]: Abstraction has 9871 states and 16007 transitions. [2020-10-29 13:10:41,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 16007 transitions. [2020-10-29 13:10:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-29 13:10:41,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:41,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:41,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:10:41,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash -232839094, now seen corresponding path program 1 times [2020-10-29 13:10:41,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:41,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525967271] [2020-10-29 13:10:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 13:10:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:47,915 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:10:47,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:47,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:48,309 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 13:10:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525967271] [2020-10-29 13:10:48,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:48,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:48,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866990742] [2020-10-29 13:10:48,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:48,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:48,312 INFO L87 Difference]: Start difference. First operand 9871 states and 16007 transitions. Second operand 5 states. [2020-10-29 13:11:02,477 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-29 13:11:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:05,355 INFO L93 Difference]: Finished difference Result 29387 states and 47646 transitions. [2020-10-29 13:11:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:05,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 474 [2020-10-29 13:11:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:05,404 INFO L225 Difference]: With dead ends: 29387 [2020-10-29 13:11:05,404 INFO L226 Difference]: Without dead ends: 19533 [2020-10-29 13:11:05,423 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 13:11:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19533 states. [2020-10-29 13:11:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19533 to 19483. [2020-10-29 13:11:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19483 states. [2020-10-29 13:11:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 31455 transitions. [2020-10-29 13:11:06,259 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 31455 transitions. Word has length 474 [2020-10-29 13:11:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:06,259 INFO L481 AbstractCegarLoop]: Abstraction has 19483 states and 31455 transitions. [2020-10-29 13:11:06,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 31455 transitions. [2020-10-29 13:11:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-29 13:11:06,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:06,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:06,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:11:06,302 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash 851773398, now seen corresponding path program 1 times [2020-10-29 13:11:06,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:06,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137606518] [2020-10-29 13:11:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:11,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-29 13:11:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:11:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:11:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:11:12,924 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:11:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:12,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:12,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:13,426 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 13:11:13,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137606518] [2020-10-29 13:11:13,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:13,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:13,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959613174] [2020-10-29 13:11:13,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:13,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:13,429 INFO L87 Difference]: Start difference. First operand 19483 states and 31455 transitions. Second operand 5 states. [2020-10-29 13:11:30,154 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-29 13:11:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:33,515 INFO L93 Difference]: Finished difference Result 57392 states and 92534 transitions. [2020-10-29 13:11:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:33,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-10-29 13:11:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:33,680 INFO L225 Difference]: With dead ends: 57392 [2020-10-29 13:11:33,680 INFO L226 Difference]: Without dead ends: 38573 [2020-10-29 13:11:33,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:11:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38573 states. [2020-10-29 13:11:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38573 to 38533. [2020-10-29 13:11:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38533 states. [2020-10-29 13:11:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38533 states to 38533 states and 61944 transitions. [2020-10-29 13:11:35,604 INFO L78 Accepts]: Start accepts. Automaton has 38533 states and 61944 transitions. Word has length 476 [2020-10-29 13:11:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:35,605 INFO L481 AbstractCegarLoop]: Abstraction has 38533 states and 61944 transitions. [2020-10-29 13:11:35,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 38533 states and 61944 transitions. [2020-10-29 13:11:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-29 13:11:35,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:35,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:35,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:11:35,657 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash -675151765, now seen corresponding path program 1 times [2020-10-29 13:11:35,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:35,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680138049] [2020-10-29 13:11:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:11:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:42,043 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:11:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:42,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:42,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:42,282 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 13:11:42,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680138049] [2020-10-29 13:11:42,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:42,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:42,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493422663] [2020-10-29 13:11:42,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:42,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:42,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:42,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:42,285 INFO L87 Difference]: Start difference. First operand 38533 states and 61944 transitions. Second operand 5 states. [2020-10-29 13:12:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:05,692 INFO L93 Difference]: Finished difference Result 110357 states and 176461 transitions. [2020-10-29 13:12:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:12:05,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 480 [2020-10-29 13:12:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:05,796 INFO L225 Difference]: With dead ends: 110357 [2020-10-29 13:12:05,796 INFO L226 Difference]: Without dead ends: 76400 [2020-10-29 13:12:05,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:12:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76400 states. [2020-10-29 13:12:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76400 to 43085. [2020-10-29 13:12:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43085 states. [2020-10-29 13:12:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43085 states to 43085 states and 70022 transitions. [2020-10-29 13:12:09,253 INFO L78 Accepts]: Start accepts. Automaton has 43085 states and 70022 transitions. Word has length 480 [2020-10-29 13:12:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:09,253 INFO L481 AbstractCegarLoop]: Abstraction has 43085 states and 70022 transitions. [2020-10-29 13:12:09,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:12:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 43085 states and 70022 transitions. [2020-10-29 13:12:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-29 13:12:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:09,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:09,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:12:09,298 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1404767666, now seen corresponding path program 1 times [2020-10-29 13:12:09,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:09,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80791558] [2020-10-29 13:12:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:14,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-29 13:12:14,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:12:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 13:12:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:15,766 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-29 13:12:15,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:15,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:16,214 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 13:12:16,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80791558] [2020-10-29 13:12:16,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:16,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:12:16,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236513765] [2020-10-29 13:12:16,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:12:16,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:12:16,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:12:16,217 INFO L87 Difference]: Start difference. First operand 43085 states and 70022 transitions. Second operand 5 states.