/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:14:30,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:14:30,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:14:30,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:14:30,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:14:30,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:14:30,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:14:30,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:14:30,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:14:30,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:14:30,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:14:30,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:14:30,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:14:30,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:14:30,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:14:30,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:14:30,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:14:30,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:14:31,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:14:31,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:14:31,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:14:31,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:14:31,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:14:31,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:14:31,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:14:31,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:14:31,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:14:31,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:14:31,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:14:31,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:14:31,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:14:31,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:14:31,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:14:31,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:14:31,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:14:31,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:14:31,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:14:31,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:14:31,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:14:31,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:14:31,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:14:31,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:14:31,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:14:31,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:14:31,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:14:31,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:14:31,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:14:31,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:14:31,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:14:31,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:14:31,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:14:31,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:14:31,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:14:31,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:14:31,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:14:31,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:14:31,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:14:31,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:14:31,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:14:31,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:14:31,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:14:31,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:14:31,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:14:31,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:14:31,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:14:31,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:14:31,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:14:31,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:14:31,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:14:31,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:14:31,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:14:31,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:14:31,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:14:31,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4fc17f53/d8a2845d790641e3a376bcbb456930bf/FLAGd4856ada4 [2020-10-29 13:14:32,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:14:32,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:14:32,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4fc17f53/d8a2845d790641e3a376bcbb456930bf/FLAGd4856ada4 [2020-10-29 13:14:32,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4fc17f53/d8a2845d790641e3a376bcbb456930bf [2020-10-29 13:14:32,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:14:32,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:14:32,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:14:32,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:14:32,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:14:32,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:32,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39080ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32, skipping insertion in model container [2020-10-29 13:14:32,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:32,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:14:32,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:14:32,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:14:32,897 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:14:32,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:14:32,975 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:14:32,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32 WrapperNode [2020-10-29 13:14:32,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:14:32,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:14:32,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:14:32,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:14:32,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:32,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... [2020-10-29 13:14:33,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:14:33,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:14:33,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:14:33,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:14:33,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:14:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:14:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:14:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:14:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:14:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:14:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:14:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:14:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:14:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:14:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:14:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:14:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:14:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:14:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:14:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:14:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:14:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:14:33,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:14:33,731 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:14:33,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:14:33 BoogieIcfgContainer [2020-10-29 13:14:33,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:14:33,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:14:33,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:14:33,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:14:33,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:14:32" (1/3) ... [2020-10-29 13:14:33,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a09ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:14:33, skipping insertion in model container [2020-10-29 13:14:33,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:14:32" (2/3) ... [2020-10-29 13:14:33,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a09ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:14:33, skipping insertion in model container [2020-10-29 13:14:33,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:14:33" (3/3) ... [2020-10-29 13:14:33,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:14:33,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:14:33,761 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:14:33,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:14:33,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:14:33,804 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:14:33,804 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:14:33,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:14:33,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:14:33,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:14:33,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:14:33,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:14:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-29 13:14:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 13:14:33,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:33,833 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] [2020-10-29 13:14:33,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:33,840 INFO L82 PathProgramCache]: Analyzing trace with hash 238077610, now seen corresponding path program 1 times [2020-10-29 13:14:33,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:33,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607300295] [2020-10-29 13:14:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:35,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 13:14:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:14:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-29 13:14:35,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:35,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:14:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:14:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 13:14:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:14:36,245 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:14:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:36,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:36,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607300295] [2020-10-29 13:14:36,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:36,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:14:36,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089911643] [2020-10-29 13:14:36,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:14:36,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:36,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:14:36,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:14:36,354 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 6 states. [2020-10-29 13:14:36,584 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:14:37,136 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:14:37,278 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:14:37,465 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:14:37,628 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:14:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:37,665 INFO L93 Difference]: Finished difference Result 347 states and 540 transitions. [2020-10-29 13:14:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:14:37,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-29 13:14:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:37,686 INFO L225 Difference]: With dead ends: 347 [2020-10-29 13:14:37,687 INFO L226 Difference]: Without dead ends: 281 [2020-10-29 13:14:37,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:14:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-29 13:14:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 106. [2020-10-29 13:14:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 13:14:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 153 transitions. [2020-10-29 13:14:37,757 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 153 transitions. Word has length 42 [2020-10-29 13:14:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:37,758 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 153 transitions. [2020-10-29 13:14:37,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:14:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 153 transitions. [2020-10-29 13:14:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 13:14:37,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:37,761 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] [2020-10-29 13:14:37,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:14:37,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash -533542023, now seen corresponding path program 1 times [2020-10-29 13:14:37,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:37,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531256690] [2020-10-29 13:14:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:38,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:40,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:40,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 13:14:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:14:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2957 [2020-10-29 13:14:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:40,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:14:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:14:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 13:14:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 13:14:41,001 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:41,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:41,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:41,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:14:41,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:41,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:41,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:41,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:14:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:41,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531256690] [2020-10-29 13:14:41,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:41,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:14:41,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101212261] [2020-10-29 13:14:41,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:14:41,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:41,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:14:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:14:41,042 INFO L87 Difference]: Start difference. First operand 106 states and 153 transitions. Second operand 6 states. [2020-10-29 13:14:41,260 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:14:41,701 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:14:41,888 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 13:14:42,056 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:14:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:42,087 INFO L93 Difference]: Finished difference Result 433 states and 661 transitions. [2020-10-29 13:14:42,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:14:42,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-29 13:14:42,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:42,095 INFO L225 Difference]: With dead ends: 433 [2020-10-29 13:14:42,095 INFO L226 Difference]: Without dead ends: 350 [2020-10-29 13:14:42,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:14:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-29 13:14:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 222. [2020-10-29 13:14:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-29 13:14:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 336 transitions. [2020-10-29 13:14:42,134 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 336 transitions. Word has length 44 [2020-10-29 13:14:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:42,134 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 336 transitions. [2020-10-29 13:14:42,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:14:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 336 transitions. [2020-10-29 13:14:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 13:14:42,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:42,137 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] [2020-10-29 13:14:42,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:14:42,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -763454641, now seen corresponding path program 1 times [2020-10-29 13:14:42,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:42,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81852730] [2020-10-29 13:14:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:42,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 13:14:42,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:14:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-29 13:14:42,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:42,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:14:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:14:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 13:14:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:14:43,113 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:14:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:43,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:14:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:43,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81852730] [2020-10-29 13:14:43,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:43,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:14:43,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288878146] [2020-10-29 13:14:43,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:14:43,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:43,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:14:43,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:14:43,157 INFO L87 Difference]: Start difference. First operand 222 states and 336 transitions. Second operand 4 states. [2020-10-29 13:14:43,418 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:14:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:43,776 INFO L93 Difference]: Finished difference Result 594 states and 917 transitions. [2020-10-29 13:14:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:14:43,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-29 13:14:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:43,780 INFO L225 Difference]: With dead ends: 594 [2020-10-29 13:14:43,780 INFO L226 Difference]: Without dead ends: 395 [2020-10-29 13:14:43,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:14:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-29 13:14:43,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2020-10-29 13:14:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-29 13:14:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 586 transitions. [2020-10-29 13:14:43,824 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 586 transitions. Word has length 44 [2020-10-29 13:14:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:43,824 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 586 transitions. [2020-10-29 13:14:43,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:14:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 586 transitions. [2020-10-29 13:14:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 13:14:43,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:43,827 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] [2020-10-29 13:14:43,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:14:43,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash -141925008, now seen corresponding path program 1 times [2020-10-29 13:14:43,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:43,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236764760] [2020-10-29 13:14:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:44,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:44,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 13:14:44,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:14:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-29 13:14:44,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:44,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:14:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:14:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 13:14:44,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:44,715 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:44,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:14:44,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:14:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:44,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236764760] [2020-10-29 13:14:44,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:44,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:14:44,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162337109] [2020-10-29 13:14:44,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:14:44,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:44,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:14:44,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:14:44,791 INFO L87 Difference]: Start difference. First operand 387 states and 586 transitions. Second operand 6 states. [2020-10-29 13:14:45,051 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 13:14:45,584 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:14:45,797 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:14:45,996 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 13:14:46,198 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:14:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:46,261 INFO L93 Difference]: Finished difference Result 882 states and 1343 transitions. [2020-10-29 13:14:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:14:46,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-29 13:14:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:46,265 INFO L225 Difference]: With dead ends: 882 [2020-10-29 13:14:46,266 INFO L226 Difference]: Without dead ends: 518 [2020-10-29 13:14:46,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:14:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-29 13:14:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 387. [2020-10-29 13:14:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-29 13:14:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2020-10-29 13:14:46,303 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 44 [2020-10-29 13:14:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:46,303 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2020-10-29 13:14:46,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:14:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2020-10-29 13:14:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 13:14:46,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:46,306 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] [2020-10-29 13:14:46,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:14:46,306 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1269643905, now seen corresponding path program 1 times [2020-10-29 13:14:46,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:46,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500123500] [2020-10-29 13:14:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:49,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 13:14:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:14:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-10-29 13:14:49,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:49,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:14:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:14:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 13:14:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:49,292 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:49,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:49,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:49,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:49,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500123500] [2020-10-29 13:14:49,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:49,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:14:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622884829] [2020-10-29 13:14:49,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:14:49,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:14:49,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:14:49,326 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand 6 states. [2020-10-29 13:14:49,517 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:14:50,076 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 13:14:50,244 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:14:50,445 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:14:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:50,611 INFO L93 Difference]: Finished difference Result 1041 states and 1576 transitions. [2020-10-29 13:14:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:14:50,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-29 13:14:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:50,622 INFO L225 Difference]: With dead ends: 1041 [2020-10-29 13:14:50,622 INFO L226 Difference]: Without dead ends: 824 [2020-10-29 13:14:50,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:14:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-29 13:14:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 608. [2020-10-29 13:14:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-29 13:14:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 920 transitions. [2020-10-29 13:14:50,683 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 920 transitions. Word has length 44 [2020-10-29 13:14:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:50,683 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 920 transitions. [2020-10-29 13:14:50,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:14:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 920 transitions. [2020-10-29 13:14:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 13:14:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:50,690 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] [2020-10-29 13:14:50,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:14:50,691 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1910575989, now seen corresponding path program 1 times [2020-10-29 13:14:50,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:50,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380233355] [2020-10-29 13:14:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:50,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 13:14:52,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:14:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-29 13:14:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:52,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:14:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:14:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:14:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:14:52,527 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:52,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:52,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:14:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:52,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:52,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380233355] [2020-10-29 13:14:52,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:52,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:14:52,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539371276] [2020-10-29 13:14:52,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:14:52,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:14:52,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:14:52,562 INFO L87 Difference]: Start difference. First operand 608 states and 920 transitions. Second operand 5 states. [2020-10-29 13:14:52,756 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 13:14:53,285 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:14:53,468 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:14:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:53,579 INFO L93 Difference]: Finished difference Result 1247 states and 1912 transitions. [2020-10-29 13:14:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:14:53,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-29 13:14:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:53,589 INFO L225 Difference]: With dead ends: 1247 [2020-10-29 13:14:53,589 INFO L226 Difference]: Without dead ends: 928 [2020-10-29 13:14:53,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:14:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-10-29 13:14:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 914. [2020-10-29 13:14:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-29 13:14:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1382 transitions. [2020-10-29 13:14:53,671 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1382 transitions. Word has length 45 [2020-10-29 13:14:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:53,671 INFO L481 AbstractCegarLoop]: Abstraction has 914 states and 1382 transitions. [2020-10-29 13:14:53,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:14:53,671 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1382 transitions. [2020-10-29 13:14:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 13:14:53,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:53,672 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] [2020-10-29 13:14:53,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:14:53,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:53,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1553981397, now seen corresponding path program 1 times [2020-10-29 13:14:53,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:53,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947978137] [2020-10-29 13:14:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:58,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 13:14:58,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:14:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:14:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:58,901 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:14:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:14:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:14:58,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:14:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:14:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:14:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:14:58,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:14:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:14:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:14:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:14:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:14:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:14:58,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947978137] [2020-10-29 13:14:58,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:14:58,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:14:58,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45390114] [2020-10-29 13:14:58,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:14:58,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:14:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:14:58,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:14:58,942 INFO L87 Difference]: Start difference. First operand 914 states and 1382 transitions. Second operand 6 states. [2020-10-29 13:14:59,116 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:14:59,618 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 13:14:59,804 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:14:59,949 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:15:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:00,126 INFO L93 Difference]: Finished difference Result 1655 states and 2505 transitions. [2020-10-29 13:15:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:15:00,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-29 13:15:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:00,134 INFO L225 Difference]: With dead ends: 1655 [2020-10-29 13:15:00,135 INFO L226 Difference]: Without dead ends: 1438 [2020-10-29 13:15:00,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:15:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-29 13:15:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1062. [2020-10-29 13:15:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-10-29 13:15:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1609 transitions. [2020-10-29 13:15:00,216 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1609 transitions. Word has length 45 [2020-10-29 13:15:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:00,218 INFO L481 AbstractCegarLoop]: Abstraction has 1062 states and 1609 transitions. [2020-10-29 13:15:00,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:15:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1609 transitions. [2020-10-29 13:15:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 13:15:00,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:00,219 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] [2020-10-29 13:15:00,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:15:00,220 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -164011386, now seen corresponding path program 1 times [2020-10-29 13:15:00,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:00,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195126877] [2020-10-29 13:15:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:00,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:00,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 13:15:00,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:15:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 13:15:00,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:00,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 13:15:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 13:15:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:00,739 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:00,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:00,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195126877] [2020-10-29 13:15:00,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:00,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:15:00,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044660347] [2020-10-29 13:15:00,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:15:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:15:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:15:00,769 INFO L87 Difference]: Start difference. First operand 1062 states and 1609 transitions. Second operand 4 states. [2020-10-29 13:15:00,922 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:15:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:01,359 INFO L93 Difference]: Finished difference Result 2916 states and 4417 transitions. [2020-10-29 13:15:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:15:01,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-29 13:15:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:01,372 INFO L225 Difference]: With dead ends: 2916 [2020-10-29 13:15:01,372 INFO L226 Difference]: Without dead ends: 1877 [2020-10-29 13:15:01,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:15:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2020-10-29 13:15:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1874. [2020-10-29 13:15:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-10-29 13:15:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2801 transitions. [2020-10-29 13:15:01,516 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2801 transitions. Word has length 45 [2020-10-29 13:15:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:01,517 INFO L481 AbstractCegarLoop]: Abstraction has 1874 states and 2801 transitions. [2020-10-29 13:15:01,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:15:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2801 transitions. [2020-10-29 13:15:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 13:15:01,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:01,518 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] [2020-10-29 13:15:01,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:15:01,518 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:01,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2004229664, now seen corresponding path program 1 times [2020-10-29 13:15:01,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:01,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744178384] [2020-10-29 13:15:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 13:15:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:15:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 13:15:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:02,259 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:02,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:02,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:15:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:02,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744178384] [2020-10-29 13:15:02,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:02,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:15:02,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020371848] [2020-10-29 13:15:02,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:15:02,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:15:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:15:02,310 INFO L87 Difference]: Start difference. First operand 1874 states and 2801 transitions. Second operand 6 states. [2020-10-29 13:15:02,509 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:15:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:02,928 INFO L93 Difference]: Finished difference Result 3725 states and 5579 transitions. [2020-10-29 13:15:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:15:02,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 13:15:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:02,939 INFO L225 Difference]: With dead ends: 3725 [2020-10-29 13:15:02,939 INFO L226 Difference]: Without dead ends: 1874 [2020-10-29 13:15:02,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:15:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-10-29 13:15:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1874. [2020-10-29 13:15:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-10-29 13:15:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2773 transitions. [2020-10-29 13:15:03,109 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2773 transitions. Word has length 46 [2020-10-29 13:15:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:03,110 INFO L481 AbstractCegarLoop]: Abstraction has 1874 states and 2773 transitions. [2020-10-29 13:15:03,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:15:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2773 transitions. [2020-10-29 13:15:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 13:15:03,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:03,111 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] [2020-10-29 13:15:03,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:15:03,111 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1425205243, now seen corresponding path program 1 times [2020-10-29 13:15:03,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868453619] [2020-10-29 13:15:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 13:15:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:15:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 13:15:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:03,475 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:03,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:03,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868453619] [2020-10-29 13:15:03,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:03,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:15:03,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101731415] [2020-10-29 13:15:03,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:15:03,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:15:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:15:03,508 INFO L87 Difference]: Start difference. First operand 1874 states and 2773 transitions. Second operand 4 states. [2020-10-29 13:15:03,707 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:15:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:04,243 INFO L93 Difference]: Finished difference Result 5128 states and 7545 transitions. [2020-10-29 13:15:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:15:04,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-29 13:15:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:04,260 INFO L225 Difference]: With dead ends: 5128 [2020-10-29 13:15:04,260 INFO L226 Difference]: Without dead ends: 3277 [2020-10-29 13:15:04,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:15:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2020-10-29 13:15:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3274. [2020-10-29 13:15:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3274 states. [2020-10-29 13:15:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4737 transitions. [2020-10-29 13:15:04,526 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4737 transitions. Word has length 46 [2020-10-29 13:15:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:04,526 INFO L481 AbstractCegarLoop]: Abstraction has 3274 states and 4737 transitions. [2020-10-29 13:15:04,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:15:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4737 transitions. [2020-10-29 13:15:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 13:15:04,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:04,527 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] [2020-10-29 13:15:04,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:15:04,528 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1562756634, now seen corresponding path program 1 times [2020-10-29 13:15:04,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:04,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856319499] [2020-10-29 13:15:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:04,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:04,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 13:15:04,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:15:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 13:15:04,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:04,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:15:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:15:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 13:15:04,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:05,098 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:05,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:05,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:05,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:05,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:15:05,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:05,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:15:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:15:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:05,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856319499] [2020-10-29 13:15:05,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:05,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:15:05,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814571139] [2020-10-29 13:15:05,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:15:05,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:05,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:15:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:15:05,167 INFO L87 Difference]: Start difference. First operand 3274 states and 4737 transitions. Second operand 6 states. [2020-10-29 13:15:05,367 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 13:15:05,839 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:15:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:06,268 INFO L93 Difference]: Finished difference Result 9720 states and 14053 transitions. [2020-10-29 13:15:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:15:06,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-29 13:15:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:06,300 INFO L225 Difference]: With dead ends: 9720 [2020-10-29 13:15:06,300 INFO L226 Difference]: Without dead ends: 6469 [2020-10-29 13:15:06,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:15:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2020-10-29 13:15:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6466. [2020-10-29 13:15:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6466 states. [2020-10-29 13:15:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 9281 transitions. [2020-10-29 13:15:06,843 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 9281 transitions. Word has length 47 [2020-10-29 13:15:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:06,843 INFO L481 AbstractCegarLoop]: Abstraction has 6466 states and 9281 transitions. [2020-10-29 13:15:06,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:15:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 9281 transitions. [2020-10-29 13:15:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 13:15:06,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:06,845 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] [2020-10-29 13:15:06,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:15:06,845 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1960347009, now seen corresponding path program 1 times [2020-10-29 13:15:06,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:06,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464897618] [2020-10-29 13:15:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:06,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 13:15:06,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:15:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:07,199 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:07,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:07,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:15:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:15:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:07,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464897618] [2020-10-29 13:15:07,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:07,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:15:07,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083956132] [2020-10-29 13:15:07,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:15:07,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:15:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:15:07,235 INFO L87 Difference]: Start difference. First operand 6466 states and 9281 transitions. Second operand 5 states. [2020-10-29 13:15:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:08,557 INFO L93 Difference]: Finished difference Result 9677 states and 13855 transitions. [2020-10-29 13:15:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:15:08,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-29 13:15:08,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:08,609 INFO L225 Difference]: With dead ends: 9677 [2020-10-29 13:15:08,609 INFO L226 Difference]: Without dead ends: 9674 [2020-10-29 13:15:08,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:15:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2020-10-29 13:15:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 6610. [2020-10-29 13:15:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6610 states. [2020-10-29 13:15:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 9353 transitions. [2020-10-29 13:15:09,260 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 9353 transitions. Word has length 47 [2020-10-29 13:15:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:09,260 INFO L481 AbstractCegarLoop]: Abstraction has 6610 states and 9353 transitions. [2020-10-29 13:15:09,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:15:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 9353 transitions. [2020-10-29 13:15:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 13:15:09,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:09,261 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] [2020-10-29 13:15:09,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:15:09,261 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1579050152, now seen corresponding path program 1 times [2020-10-29 13:15:09,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:09,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166897103] [2020-10-29 13:15:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:15:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:15:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:15:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:10,156 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:15:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:10,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:15:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:15:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:10,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166897103] [2020-10-29 13:15:10,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:10,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:15:10,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048163152] [2020-10-29 13:15:10,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:15:10,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:10,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:15:10,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:15:10,215 INFO L87 Difference]: Start difference. First operand 6610 states and 9353 transitions. Second operand 7 states. [2020-10-29 13:15:10,411 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 13:15:11,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:11,863 INFO L93 Difference]: Finished difference Result 16446 states and 23028 transitions. [2020-10-29 13:15:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:15:11,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-29 13:15:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:11,892 INFO L225 Difference]: With dead ends: 16446 [2020-10-29 13:15:11,892 INFO L226 Difference]: Without dead ends: 11785 [2020-10-29 13:15:11,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:15:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2020-10-29 13:15:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 6617. [2020-10-29 13:15:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6617 states. [2020-10-29 13:15:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6617 states to 6617 states and 9362 transitions. [2020-10-29 13:15:12,476 INFO L78 Accepts]: Start accepts. Automaton has 6617 states and 9362 transitions. Word has length 49 [2020-10-29 13:15:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:12,476 INFO L481 AbstractCegarLoop]: Abstraction has 6617 states and 9362 transitions. [2020-10-29 13:15:12,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:15:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6617 states and 9362 transitions. [2020-10-29 13:15:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:15:12,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:12,479 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:15:12,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:15:12,480 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1088770021, now seen corresponding path program 1 times [2020-10-29 13:15:12,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:12,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279084352] [2020-10-29 13:15:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:17,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:15:17,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:15:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4783 [2020-10-29 13:15:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:17,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:15:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:15:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 13:15:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:17,575 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 23 [2020-10-29 13:15:17,766 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:17,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:17,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:17,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279084352] [2020-10-29 13:15:17,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:15:17,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 13:15:17,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889584497] [2020-10-29 13:15:17,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:15:17,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:15:17,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:15:17,805 INFO L87 Difference]: Start difference. First operand 6617 states and 9362 transitions. Second operand 9 states. [2020-10-29 13:15:18,048 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 13:15:19,693 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:15:19,874 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:15:20,112 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 13:15:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:24,141 INFO L93 Difference]: Finished difference Result 48332 states and 66977 transitions. [2020-10-29 13:15:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 13:15:24,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 13:15:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:24,248 INFO L225 Difference]: With dead ends: 48332 [2020-10-29 13:15:24,248 INFO L226 Difference]: Without dead ends: 41745 [2020-10-29 13:15:24,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:15:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41745 states. [2020-10-29 13:15:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41745 to 20705. [2020-10-29 13:15:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20705 states. [2020-10-29 13:15:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20705 states to 20705 states and 28790 transitions. [2020-10-29 13:15:26,793 INFO L78 Accepts]: Start accepts. Automaton has 20705 states and 28790 transitions. Word has length 68 [2020-10-29 13:15:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:26,794 INFO L481 AbstractCegarLoop]: Abstraction has 20705 states and 28790 transitions. [2020-10-29 13:15:26,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:15:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20705 states and 28790 transitions. [2020-10-29 13:15:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:15:26,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:26,798 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:15:26,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:15:26,798 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:26,806 INFO L82 PathProgramCache]: Analyzing trace with hash -204691798, now seen corresponding path program 1 times [2020-10-29 13:15:26,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:26,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439296679] [2020-10-29 13:15:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:15:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:15:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:30,376 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-29 13:15:30,571 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:30,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:30,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439296679] [2020-10-29 13:15:30,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:15:30,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 13:15:30,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961324918] [2020-10-29 13:15:30,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:15:30,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:30,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:15:30,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:15:30,607 INFO L87 Difference]: Start difference. First operand 20705 states and 28790 transitions. Second operand 10 states. [2020-10-29 13:15:30,819 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:15:32,845 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 13:15:33,061 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 13:15:33,375 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:15:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:38,648 INFO L93 Difference]: Finished difference Result 54906 states and 76578 transitions. [2020-10-29 13:15:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 13:15:38,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-29 13:15:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:38,722 INFO L225 Difference]: With dead ends: 54906 [2020-10-29 13:15:38,722 INFO L226 Difference]: Without dead ends: 43926 [2020-10-29 13:15:38,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-29 13:15:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43926 states. [2020-10-29 13:15:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43926 to 22621. [2020-10-29 13:15:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22621 states. [2020-10-29 13:15:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22621 states to 22621 states and 31626 transitions. [2020-10-29 13:15:41,873 INFO L78 Accepts]: Start accepts. Automaton has 22621 states and 31626 transitions. Word has length 68 [2020-10-29 13:15:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:41,873 INFO L481 AbstractCegarLoop]: Abstraction has 22621 states and 31626 transitions. [2020-10-29 13:15:41,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:15:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 22621 states and 31626 transitions. [2020-10-29 13:15:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:15:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:41,876 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:15:41,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:15:41,877 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:41,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1216855328, now seen corresponding path program 1 times [2020-10-29 13:15:41,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:41,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858110263] [2020-10-29 13:15:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:45,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:45,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:15:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:15:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3545 [2020-10-29 13:15:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:45,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:15:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:15:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:15:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:45,655 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:45,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:45,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:15:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:45,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:15:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:15:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:15:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 13:15:45,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858110263] [2020-10-29 13:15:45,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:15:45,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:15:45,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473630406] [2020-10-29 13:15:45,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:15:45,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:15:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:15:45,727 INFO L87 Difference]: Start difference. First operand 22621 states and 31626 transitions. Second operand 6 states. [2020-10-29 13:15:45,924 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:15:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:15:48,688 INFO L93 Difference]: Finished difference Result 44880 states and 62816 transitions. [2020-10-29 13:15:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:15:48,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-29 13:15:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:15:48,730 INFO L225 Difference]: With dead ends: 44880 [2020-10-29 13:15:48,731 INFO L226 Difference]: Without dead ends: 22289 [2020-10-29 13:15:48,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:15:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22289 states. [2020-10-29 13:15:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22289 to 22177. [2020-10-29 13:15:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2020-10-29 13:15:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 30518 transitions. [2020-10-29 13:15:51,625 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 30518 transitions. Word has length 68 [2020-10-29 13:15:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:15:51,625 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 30518 transitions. [2020-10-29 13:15:51,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:15:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 30518 transitions. [2020-10-29 13:15:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:15:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:15:51,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:15:51,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:15:51,630 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:15:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:15:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1498930970, now seen corresponding path program 1 times [2020-10-29 13:15:51,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:15:51,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57998988] [2020-10-29 13:15:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:15:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:15:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:15:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:15:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:56,885 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:15:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:15:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:15:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:15:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:15:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:15:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:15:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:15:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:15:56,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57998988] [2020-10-29 13:15:56,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:15:56,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 13:15:56,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839031515] [2020-10-29 13:15:56,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:15:56,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:15:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:15:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:15:56,922 INFO L87 Difference]: Start difference. First operand 22177 states and 30518 transitions. Second operand 6 states. [2020-10-29 13:15:57,096 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:15:57,869 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 13:15:58,077 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:16:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:16:01,434 INFO L93 Difference]: Finished difference Result 40953 states and 57278 transitions. [2020-10-29 13:16:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:16:01,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 13:16:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:16:01,472 INFO L225 Difference]: With dead ends: 40953 [2020-10-29 13:16:01,473 INFO L226 Difference]: Without dead ends: 31068 [2020-10-29 13:16:01,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:16:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31068 states. [2020-10-29 13:16:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31068 to 30819. [2020-10-29 13:16:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30819 states. [2020-10-29 13:16:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30819 states to 30819 states and 42260 transitions. [2020-10-29 13:16:05,393 INFO L78 Accepts]: Start accepts. Automaton has 30819 states and 42260 transitions. Word has length 69 [2020-10-29 13:16:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:16:05,393 INFO L481 AbstractCegarLoop]: Abstraction has 30819 states and 42260 transitions. [2020-10-29 13:16:05,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:16:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 30819 states and 42260 transitions. [2020-10-29 13:16:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:16:05,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:16:05,398 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:16:05,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:16:05,398 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:16:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:16:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash 465606209, now seen corresponding path program 1 times [2020-10-29 13:16:05,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:16:05,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773184444] [2020-10-29 13:16:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:16:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:16:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:16:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:16:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:16:06,387 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:16:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:16:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:16:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:16:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:16:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:16:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:16:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:16:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:16:06,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773184444] [2020-10-29 13:16:06,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:16:06,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 13:16:06,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576926117] [2020-10-29 13:16:06,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:16:06,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:16:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:16:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:16:06,419 INFO L87 Difference]: Start difference. First operand 30819 states and 42260 transitions. Second operand 10 states. [2020-10-29 13:16:06,637 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 13:16:08,586 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 13:16:09,076 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 13:16:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:16:30,659 INFO L93 Difference]: Finished difference Result 164859 states and 223709 transitions. [2020-10-29 13:16:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:16:30,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-29 13:16:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:16:30,891 INFO L225 Difference]: With dead ends: 164859 [2020-10-29 13:16:30,891 INFO L226 Difference]: Without dead ends: 148726 [2020-10-29 13:16:30,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-10-29 13:16:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148726 states. [2020-10-29 13:16:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148726 to 77569. [2020-10-29 13:16:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77569 states. [2020-10-29 13:16:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77569 states to 77569 states and 106814 transitions. [2020-10-29 13:16:43,485 INFO L78 Accepts]: Start accepts. Automaton has 77569 states and 106814 transitions. Word has length 69 [2020-10-29 13:16:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:16:43,485 INFO L481 AbstractCegarLoop]: Abstraction has 77569 states and 106814 transitions. [2020-10-29 13:16:43,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:16:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 77569 states and 106814 transitions. [2020-10-29 13:16:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:16:43,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:16:43,491 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:16:43,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:16:43,491 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:16:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:16:43,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1741301447, now seen corresponding path program 1 times [2020-10-29 13:16:43,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:16:43,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62320098] [2020-10-29 13:16:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:16:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:16:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:16:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:16:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 13:16:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:16:48,727 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:16:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:16:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:16:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:16:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:16:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:16:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:16:48,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62320098] [2020-10-29 13:16:48,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:16:48,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 13:16:48,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121621867] [2020-10-29 13:16:48,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:16:48,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:16:48,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:16:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:16:48,754 INFO L87 Difference]: Start difference. First operand 77569 states and 106814 transitions. Second operand 8 states. [2020-10-29 13:16:48,941 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 13:16:50,426 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:16:50,665 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 13:16:50,954 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 13:17:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:17:07,469 INFO L93 Difference]: Finished difference Result 183970 states and 252907 transitions. [2020-10-29 13:17:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 13:17:07,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-29 13:17:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:17:07,635 INFO L225 Difference]: With dead ends: 183970 [2020-10-29 13:17:07,635 INFO L226 Difference]: Without dead ends: 106431 [2020-10-29 13:17:07,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:17:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106431 states. [2020-10-29 13:17:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106431 to 66329. [2020-10-29 13:17:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66329 states. [2020-10-29 13:17:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66329 states to 66329 states and 90269 transitions. [2020-10-29 13:17:18,494 INFO L78 Accepts]: Start accepts. Automaton has 66329 states and 90269 transitions. Word has length 69 [2020-10-29 13:17:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:17:18,494 INFO L481 AbstractCegarLoop]: Abstraction has 66329 states and 90269 transitions. [2020-10-29 13:17:18,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:17:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 66329 states and 90269 transitions. [2020-10-29 13:17:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:17:18,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:17:18,498 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:17:18,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:17:18,499 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:17:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:17:18,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1339349141, now seen corresponding path program 1 times [2020-10-29 13:17:18,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:17:18,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270006337] [2020-10-29 13:17:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:17:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:17:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:17:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:17:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:17:23,682 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-29 13:17:23,864 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:17:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:17:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:17:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:23,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:17:23,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:17:23,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:17:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:17:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:17:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:17:23,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270006337] [2020-10-29 13:17:23,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:17:23,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 13:17:23,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880772027] [2020-10-29 13:17:23,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:17:23,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:17:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:17:23,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:17:23,891 INFO L87 Difference]: Start difference. First operand 66329 states and 90269 transitions. Second operand 9 states. [2020-10-29 13:17:24,112 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 13:17:26,131 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 13:17:26,363 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 13:17:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:17:48,187 INFO L93 Difference]: Finished difference Result 190615 states and 255472 transitions. [2020-10-29 13:17:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 13:17:48,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-29 13:17:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:17:48,385 INFO L225 Difference]: With dead ends: 190615 [2020-10-29 13:17:48,385 INFO L226 Difference]: Without dead ends: 124388 [2020-10-29 13:17:48,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-10-29 13:17:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124388 states. [2020-10-29 13:17:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124388 to 66329. [2020-10-29 13:17:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66329 states. [2020-10-29 13:17:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66329 states to 66329 states and 89719 transitions. [2020-10-29 13:17:59,854 INFO L78 Accepts]: Start accepts. Automaton has 66329 states and 89719 transitions. Word has length 69 [2020-10-29 13:17:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:17:59,855 INFO L481 AbstractCegarLoop]: Abstraction has 66329 states and 89719 transitions. [2020-10-29 13:17:59,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:17:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 66329 states and 89719 transitions. [2020-10-29 13:17:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:17:59,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:17:59,860 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 13:17:59,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 13:17:59,860 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:17:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:17:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1894593981, now seen corresponding path program 1 times [2020-10-29 13:17:59,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:17:59,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216995578] [2020-10-29 13:17:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:17:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:17:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:17:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:18:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:18:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:18:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:18:01,393 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 13:18:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:18:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:18:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:18:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:18:01,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216995578] [2020-10-29 13:18:01,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 13:18:01,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 13:18:01,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612956783] [2020-10-29 13:18:01,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:18:01,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:18:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:18:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:18:01,426 INFO L87 Difference]: Start difference. First operand 66329 states and 89719 transitions. Second operand 9 states. [2020-10-29 13:18:01,617 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 13:18:02,494 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 13:18:02,690 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121