/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/eca-rers2012/Problem06_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:35:08,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:35:08,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:35:08,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:35:08,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:35:08,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:35:08,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:35:08,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:35:08,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:35:08,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:35:08,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:35:08,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:35:08,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:35:08,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:35:08,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:35:08,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:35:08,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:35:08,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:35:08,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:35:08,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:35:08,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:35:08,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:35:08,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:35:08,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:35:08,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:35:08,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:35:08,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:35:08,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:35:08,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:35:08,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:35:08,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:35:08,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:35:08,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:35:08,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:35:08,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:35:08,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:35:08,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:35:08,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:35:08,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:35:08,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:35:08,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:35:08,699 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 05:35:08,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:35:08,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:35:08,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:35:08,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:35:08,749 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:35:08,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:35:08,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:35:08,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:35:08,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:35:08,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:35:08,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:35:08,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:35:08,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:35:08,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:35:08,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:35:08,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:35:08,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:35:08,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:35:08,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:35:08,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:35:08,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:35:08,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:35:08,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:35:08,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:35:08,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:35:08,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:35:08,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:35:08,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:35:08,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:35:08,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:35:09,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:35:09,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:35:09,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:35:09,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:35:09,196 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:35:09,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label06.c [2020-10-29 05:35:09,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3dfd129c/fb52e6fe137b4059855214d91c08087c/FLAG63f2191e1 [2020-10-29 05:35:10,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:35:10,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label06.c [2020-10-29 05:35:10,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3dfd129c/fb52e6fe137b4059855214d91c08087c/FLAG63f2191e1 [2020-10-29 05:35:10,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3dfd129c/fb52e6fe137b4059855214d91c08087c [2020-10-29 05:35:10,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:35:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:35:10,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:35:10,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:35:10,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:35:10,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:10" (1/1) ... [2020-10-29 05:35:10,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65734a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:10, skipping insertion in model container [2020-10-29 05:35:10,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:10" (1/1) ... [2020-10-29 05:35:10,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:35:11,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:35:13,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:35:13,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:35:14,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:35:14,614 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:35:14,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14 WrapperNode [2020-10-29 05:35:14,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:35:14,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:35:14,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:35:14,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:35:14,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:14,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:14,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:14,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:15,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:15,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:15,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (1/1) ... [2020-10-29 05:35:15,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:35:15,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:35:15,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:35:15,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:35:15,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (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 05:35:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:35:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:35:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:35:15,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:35:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:35:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:35:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:35:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:35:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:35:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:35:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:35:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:35:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:35:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:35:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:35:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:35:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:35:23,776 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:35:23,777 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:35:23,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:23 BoogieIcfgContainer [2020-10-29 05:35:23,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:35:23,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:35:23,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:35:23,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:35:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:35:10" (1/3) ... [2020-10-29 05:35:23,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c44657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:23, skipping insertion in model container [2020-10-29 05:35:23,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:14" (2/3) ... [2020-10-29 05:35:23,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c44657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:23, skipping insertion in model container [2020-10-29 05:35:23,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:23" (3/3) ... [2020-10-29 05:35:23,795 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label06.c [2020-10-29 05:35:23,809 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:35:23,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:35:23,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:35:23,885 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:35:23,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:35:23,885 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:35:23,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:35:23,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:35:23,886 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:35:23,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:35:23,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:35:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:35:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-29 05:35:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:35:24,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:24,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:35:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:35:24,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1485429012, now seen corresponding path program 1 times [2020-10-29 05:35:24,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:35:24,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413557237] [2020-10-29 05:35:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:35:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-29 05:35:30,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:35:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-29 05:35:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:30,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:35:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:35:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 980 [2020-10-29 05:35:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:35:32,134 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:35:32,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:35:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:32,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:35:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:35:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:32,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:35:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:35:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:35:33,659 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 05:35:33,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413557237] [2020-10-29 05:35:33,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:35:33,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:35:33,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915881975] [2020-10-29 05:35:33,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:35:33,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:35:33,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:35:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:35:33,712 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-29 05:35:34,016 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:35:34,584 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:35:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:35:58,759 INFO L93 Difference]: Finished difference Result 4870 states and 9192 transitions. [2020-10-29 05:35:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:35:58,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 971 [2020-10-29 05:35:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:35:58,815 INFO L225 Difference]: With dead ends: 4870 [2020-10-29 05:35:58,815 INFO L226 Difference]: Without dead ends: 3483 [2020-10-29 05:35:58,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:35:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2020-10-29 05:35:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3396. [2020-10-29 05:35:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3396 states. [2020-10-29 05:35:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5482 transitions. [2020-10-29 05:35:59,056 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5482 transitions. Word has length 971 [2020-10-29 05:35:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:35:59,059 INFO L481 AbstractCegarLoop]: Abstraction has 3396 states and 5482 transitions. [2020-10-29 05:35:59,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:35:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5482 transitions. [2020-10-29 05:35:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-29 05:35:59,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:35:59,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:59,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:35:59,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:35:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:35:59,105 INFO L82 PathProgramCache]: Analyzing trace with hash 112159731, now seen corresponding path program 1 times [2020-10-29 05:35:59,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:35:59,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949982403] [2020-10-29 05:35:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:35:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:04,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-29 05:36:04,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 05:36:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:04,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:36:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:36:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 977 [2020-10-29 05:36:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:36:05,258 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:36:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:05,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:05,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:36:05,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:05,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:36:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:36:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:36:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:05,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:05,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:36:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:36:05,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:05,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:36:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:36:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:36:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:36:06,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949982403] [2020-10-29 05:36:06,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:36:06,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:36:06,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650735457] [2020-10-29 05:36:06,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:36:06,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:36:06,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:36:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:36:06,508 INFO L87 Difference]: Start difference. First operand 3396 states and 5482 transitions. Second operand 5 states. [2020-10-29 05:36:06,843 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:36:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:36:25,706 INFO L93 Difference]: Finished difference Result 7880 states and 13053 transitions. [2020-10-29 05:36:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:36:25,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 979 [2020-10-29 05:36:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:36:25,740 INFO L225 Difference]: With dead ends: 7880 [2020-10-29 05:36:25,741 INFO L226 Difference]: Without dead ends: 4490 [2020-10-29 05:36:25,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:36:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2020-10-29 05:36:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4447. [2020-10-29 05:36:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4447 states. [2020-10-29 05:36:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 6968 transitions. [2020-10-29 05:36:25,911 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 6968 transitions. Word has length 979 [2020-10-29 05:36:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:36:25,913 INFO L481 AbstractCegarLoop]: Abstraction has 4447 states and 6968 transitions. [2020-10-29 05:36:25,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:36:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 6968 transitions. [2020-10-29 05:36:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-29 05:36:25,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:36:25,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:25,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:36:25,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:36:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:36:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1037205051, now seen corresponding path program 1 times [2020-10-29 05:36:25,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:36:25,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600872638] [2020-10-29 05:36:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:36:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:31,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:31,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 05:36:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 05:36:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:36:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:36:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:36:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:31,516 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:36:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:31,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:31,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:36:31,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:31,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:36:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:36:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:36:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:36:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:36:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:36:31,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:31,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:36:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:36:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:36:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:31,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:31,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:36:31,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:31,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 05:36:31,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:31,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:36:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:36:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:36:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:36:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:36:32,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600872638] [2020-10-29 05:36:32,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:36:32,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:36:32,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641056726] [2020-10-29 05:36:32,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:36:32,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:36:32,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:36:32,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:36:32,467 INFO L87 Difference]: Start difference. First operand 4447 states and 6968 transitions. Second operand 7 states. [2020-10-29 05:36:32,727 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:36:33,913 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:36:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:36:53,760 INFO L93 Difference]: Finished difference Result 13295 states and 21275 transitions. [2020-10-29 05:36:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:36:53,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 988 [2020-10-29 05:36:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:36:53,818 INFO L225 Difference]: With dead ends: 13295 [2020-10-29 05:36:53,818 INFO L226 Difference]: Without dead ends: 8854 [2020-10-29 05:36:53,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:36:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2020-10-29 05:36:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 8737. [2020-10-29 05:36:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8737 states. [2020-10-29 05:36:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8737 states to 8737 states and 13047 transitions. [2020-10-29 05:36:54,149 INFO L78 Accepts]: Start accepts. Automaton has 8737 states and 13047 transitions. Word has length 988 [2020-10-29 05:36:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:36:54,149 INFO L481 AbstractCegarLoop]: Abstraction has 8737 states and 13047 transitions. [2020-10-29 05:36:54,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:36:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8737 states and 13047 transitions. [2020-10-29 05:36:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-29 05:36:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:36:54,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:54,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:36:54,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:36:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:36:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1027563128, now seen corresponding path program 1 times [2020-10-29 05:36:54,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:36:54,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407046469] [2020-10-29 05:36:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:36:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-29 05:36:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-29 05:36:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:36:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:36:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:36:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:59,875 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:36:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:59,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:59,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:59,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:36:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:37:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:00,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:00,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:37:00,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:00,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 05:37:00,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:00,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:37:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:37:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:37:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:37:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:00,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:00,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:37:00,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:37:00,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:00,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:37:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:37:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:37:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:37:00,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407046469] [2020-10-29 05:37:00,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:00,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:37:00,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871446489] [2020-10-29 05:37:00,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:37:00,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:00,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:37:00,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:37:00,687 INFO L87 Difference]: Start difference. First operand 8737 states and 13047 transitions. Second operand 7 states. [2020-10-29 05:37:00,960 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:02,480 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:37:22,693 INFO L93 Difference]: Finished difference Result 26725 states and 42249 transitions. [2020-10-29 05:37:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:37:22,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 995 [2020-10-29 05:37:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:37:22,800 INFO L225 Difference]: With dead ends: 26725 [2020-10-29 05:37:22,800 INFO L226 Difference]: Without dead ends: 17994 [2020-10-29 05:37:22,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:37:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17994 states. [2020-10-29 05:37:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17994 to 17647. [2020-10-29 05:37:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17647 states. [2020-10-29 05:37:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17647 states to 17647 states and 25812 transitions. [2020-10-29 05:37:23,383 INFO L78 Accepts]: Start accepts. Automaton has 17647 states and 25812 transitions. Word has length 995 [2020-10-29 05:37:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:37:23,384 INFO L481 AbstractCegarLoop]: Abstraction has 17647 states and 25812 transitions. [2020-10-29 05:37:23,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:37:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17647 states and 25812 transitions. [2020-10-29 05:37:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-29 05:37:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:23,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:23,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:37:23,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:23,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:23,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1246368824, now seen corresponding path program 1 times [2020-10-29 05:37:23,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:23,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116097226] [2020-10-29 05:37:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:37:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 05:37:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 977 [2020-10-29 05:37:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:29,684 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:29,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:37:29,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:29,813 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:37:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:37:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:29,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:29,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 05:37:29,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:37:29,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:29,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:37:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:37:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 05:37:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:30,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:30,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:37:30,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 05:37:30,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:30,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:37:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:37:30,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116097226] [2020-10-29 05:37:30,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:30,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:37:30,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540759559] [2020-10-29 05:37:30,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:37:30,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:30,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:37:30,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:37:30,991 INFO L87 Difference]: Start difference. First operand 17647 states and 25812 transitions. Second operand 5 states. [2020-10-29 05:37:31,494 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:37:50,678 INFO L93 Difference]: Finished difference Result 52423 states and 80171 transitions. [2020-10-29 05:37:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:37:50,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1016 [2020-10-29 05:37:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:37:50,820 INFO L225 Difference]: With dead ends: 52423 [2020-10-29 05:37:50,820 INFO L226 Difference]: Without dead ends: 34782 [2020-10-29 05:37:50,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:37:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34782 states. [2020-10-29 05:37:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34782 to 34701. [2020-10-29 05:37:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34701 states. [2020-10-29 05:37:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34701 states to 34701 states and 50585 transitions. [2020-10-29 05:37:51,831 INFO L78 Accepts]: Start accepts. Automaton has 34701 states and 50585 transitions. Word has length 1016 [2020-10-29 05:37:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:37:51,833 INFO L481 AbstractCegarLoop]: Abstraction has 34701 states and 50585 transitions. [2020-10-29 05:37:51,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:37:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 34701 states and 50585 transitions. [2020-10-29 05:37:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-29 05:37:51,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:51,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:51,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:37:51,953 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:51,953 INFO L82 PathProgramCache]: Analyzing trace with hash 341580347, now seen corresponding path program 1 times [2020-10-29 05:37:51,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:51,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869155447] [2020-10-29 05:37:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5285 [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:57,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:37:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 05:37:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 978 [2020-10-29 05:37:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:58,233 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:58,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:37:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:37:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:58,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:58,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 05:37:58,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 05:37:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:59,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869155447] [2020-10-29 05:37:59,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:59,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:37:59,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947844516] [2020-10-29 05:37:59,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:37:59,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:59,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:37:59,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:37:59,621 INFO L87 Difference]: Start difference. First operand 34701 states and 50585 transitions. Second operand 6 states. [2020-10-29 05:38:00,105 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:01,024 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:38:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:27,794 INFO L93 Difference]: Finished difference Result 136822 states and 216424 transitions. [2020-10-29 05:38:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:38:27,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1025 [2020-10-29 05:38:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:28,355 INFO L225 Difference]: With dead ends: 136822 [2020-10-29 05:38:28,356 INFO L226 Difference]: Without dead ends: 102127 [2020-10-29 05:38:28,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:38:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102127 states. [2020-10-29 05:38:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102127 to 102023. [2020-10-29 05:38:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102023 states. [2020-10-29 05:38:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102023 states to 102023 states and 150491 transitions. [2020-10-29 05:38:32,431 INFO L78 Accepts]: Start accepts. Automaton has 102023 states and 150491 transitions. Word has length 1025 [2020-10-29 05:38:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:32,433 INFO L481 AbstractCegarLoop]: Abstraction has 102023 states and 150491 transitions. [2020-10-29 05:38:32,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:38:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 102023 states and 150491 transitions. [2020-10-29 05:38:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-29 05:38:32,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:32,872 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:32,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:38:32,873 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:32,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1364377393, now seen corresponding path program 1 times [2020-10-29 05:38:32,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:32,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990855879] [2020-10-29 05:38:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:38,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5227 [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:38:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:38:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:38:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:38,919 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:38,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:38,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:38:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:38,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:38:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:38:39,119 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:38:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 05:38:39,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 05:38:39,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:38:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:38:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:38:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:38:39,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 05:38:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:38:39,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 05:38:39,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:38:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:38:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:38:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:38:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:38:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 05:38:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:38:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 05:38:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:38:39,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:38:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 76 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 05:38:40,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990855879] [2020-10-29 05:38:40,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:38:40,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:38:40,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403136925] [2020-10-29 05:38:40,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:38:40,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:40,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:38:40,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:38:40,534 INFO L87 Difference]: Start difference. First operand 102023 states and 150491 transitions. Second operand 8 states. [2020-10-29 05:38:40,815 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:42,386 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159