/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=DEEPEST --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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:15:38,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:15:38,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:15:38,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:15:38,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:15:38,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:15:38,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:15:38,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:15:38,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:15:38,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:15:38,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:15:38,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:15:38,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:15:38,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:15:38,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:15:38,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:15:38,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:15:38,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:15:38,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:15:38,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:15:38,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:15:38,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:15:38,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:15:38,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:15:38,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:15:38,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:15:38,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:15:38,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:15:38,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:15:38,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:15:38,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:15:38,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:15:38,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:15:38,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:15:38,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:15:38,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:15:38,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:15:38,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:15:38,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:15:38,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:15:38,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:15:38,159 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 [2020-10-28 01:15:38,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:15:38,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:15:38,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:15:38,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:15:38,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:15:38,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:15:38,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:15:38,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:15:38,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:15:38,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:15:38,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:15:38,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:15:38,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:15:38,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:15:38,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:15:38,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:15:38,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:15:38,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:15:38,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:15:38,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:15:38,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:15:38,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:15:38,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:15:38,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:15:38,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:15:38,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:15:38,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:15:38,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:15:38,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:15:38,690 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:15:38,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-28 01:15:38,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c3e5a3f/e8e6d505199e41eca516daac4923b11c/FLAG8f4273c3c [2020-10-28 01:15:39,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:15:39,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-28 01:15:39,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c3e5a3f/e8e6d505199e41eca516daac4923b11c/FLAG8f4273c3c [2020-10-28 01:15:39,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c3e5a3f/e8e6d505199e41eca516daac4923b11c [2020-10-28 01:15:39,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:15:39,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:15:39,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:15:39,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:15:39,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:15:39,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:39,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90e4482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39, skipping insertion in model container [2020-10-28 01:15:39,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:39,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:15:39,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:15:39,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:15:39,942 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:15:39,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:15:39,994 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:15:39,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39 WrapperNode [2020-10-28 01:15:39,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:15:39,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:15:39,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:15:39,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:15:40,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (1/1) ... [2020-10-28 01:15:40,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:15:40,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:15:40,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:15:40,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:15:40,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (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 [2020-10-28 01:15:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:15:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:15:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 01:15:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:15:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 01:15:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-28 01:15:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-28 01:15:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-28 01:15:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 01:15:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:15:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 01:15:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 01:15:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 01:15:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:15:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:15:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 01:15:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:15:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 01:15:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 01:15:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:15:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:15:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:15:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:15:40,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:15:40,823 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-28 01:15:40,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:40 BoogieIcfgContainer [2020-10-28 01:15:40,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:15:40,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:15:40,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:15:40,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:15:40,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:15:39" (1/3) ... [2020-10-28 01:15:40,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c6b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:40, skipping insertion in model container [2020-10-28 01:15:40,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:39" (2/3) ... [2020-10-28 01:15:40,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c6b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:40, skipping insertion in model container [2020-10-28 01:15:40,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:40" (3/3) ... [2020-10-28 01:15:40,839 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2020-10-28 01:15:40,854 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:15:40,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:15:40,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:15:40,918 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:15:40,918 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:15:40,918 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:15:40,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:15:40,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:15:40,919 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:15:40,919 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:15:40,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:15:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-28 01:15:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 01:15:40,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:40,949 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:15:40,949 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1994136589, now seen corresponding path program 1 times [2020-10-28 01:15:40,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:40,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562736742] [2020-10-28 01:15:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:44,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 01:15:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:15:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3801 [2020-10-28 01:15:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 01:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:15:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 01:15:45,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:15:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:15:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:15:45,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:45,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:15:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:45,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:15:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:15:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:15:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:15:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:15:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:15:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:15:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:45,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:15:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:45,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:15:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:15:45,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562736742] [2020-10-28 01:15:45,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:45,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:15:45,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807334899] [2020-10-28 01:15:45,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:15:45,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:45,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:15:45,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:15:45,247 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-10-28 01:15:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:45,645 INFO L93 Difference]: Finished difference Result 132 states and 177 transitions. [2020-10-28 01:15:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:15:45,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 01:15:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:45,656 INFO L225 Difference]: With dead ends: 132 [2020-10-28 01:15:45,657 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 01:15:45,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:15:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 01:15:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-28 01:15:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 01:15:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-28 01:15:45,713 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 55 [2020-10-28 01:15:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:45,714 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-28 01:15:45,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:15:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-28 01:15:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 01:15:45,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:45,717 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:15:45,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:15:45,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:45,719 INFO L82 PathProgramCache]: Analyzing trace with hash 12339258, now seen corresponding path program 1 times [2020-10-28 01:15:45,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:45,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421073397] [2020-10-28 01:15:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 01:15:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:15:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:15:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:15:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 01:15:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:15:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:50,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:50,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:15:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:50,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:15:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:50,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:15:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:50,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:15:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:50,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:15:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:50,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:50,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:15:50,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:15:50,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:15:51,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:15:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:51,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:51,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:51,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 01:15:51,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:15:51,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421073397] [2020-10-28 01:15:51,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:51,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 01:15:51,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695737839] [2020-10-28 01:15:51,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:15:51,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:51,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:15:51,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:15:51,120 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 14 states. [2020-10-28 01:15:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:52,258 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-28 01:15:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:15:52,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-28 01:15:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:52,264 INFO L225 Difference]: With dead ends: 96 [2020-10-28 01:15:52,264 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 01:15:52,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:15:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 01:15:52,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-28 01:15:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 01:15:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2020-10-28 01:15:52,292 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 55 [2020-10-28 01:15:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:52,292 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2020-10-28 01:15:52,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:15:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2020-10-28 01:15:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 01:15:52,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:52,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:15:52,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:15:52,296 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash -559053151, now seen corresponding path program 1 times [2020-10-28 01:15:52,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:52,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131061914] [2020-10-28 01:15:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:15:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 01:15:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:15:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:57,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:15:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:15:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:15:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:57,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:15:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:15:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:57,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:15:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:15:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:15:57,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:15:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 01:15:57,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 01:15:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 01:15:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:57,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:57,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:57,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:15:57,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:15:57,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131061914] [2020-10-28 01:15:57,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:15:57,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966223556] [2020-10-28 01:15:57,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:15:57,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:57,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:15:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:15:57,585 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand 9 states. [2020-10-28 01:15:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:58,090 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2020-10-28 01:15:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 01:15:58,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-28 01:15:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:58,093 INFO L225 Difference]: With dead ends: 118 [2020-10-28 01:15:58,093 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 01:15:58,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:15:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 01:15:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-28 01:15:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 01:15:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-28 01:15:58,112 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 58 [2020-10-28 01:15:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:58,112 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-28 01:15:58,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:15:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-28 01:15:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 01:15:58,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:58,115 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:15:58,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:15:58,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:58,116 INFO L82 PathProgramCache]: Analyzing trace with hash -496046741, now seen corresponding path program 1 times [2020-10-28 01:15:58,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:58,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904241136] [2020-10-28 01:15:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:03,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 01:16:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:16:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:03,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:03,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:03,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:03,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:03,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:16:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:16:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:16:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:16:03,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904241136] [2020-10-28 01:16:03,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:03,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:16:03,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407177923] [2020-10-28 01:16:03,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:16:03,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:16:03,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:16:03,547 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 11 states. [2020-10-28 01:16:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:04,174 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2020-10-28 01:16:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:16:04,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-28 01:16:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:04,176 INFO L225 Difference]: With dead ends: 105 [2020-10-28 01:16:04,177 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 01:16:04,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:16:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 01:16:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-10-28 01:16:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-28 01:16:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-10-28 01:16:04,209 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 59 [2020-10-28 01:16:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:04,212 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-10-28 01:16:04,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:16:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-10-28 01:16:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 01:16:04,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:04,215 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:04,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:16:04,217 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:04,217 INFO L82 PathProgramCache]: Analyzing trace with hash -889520791, now seen corresponding path program 1 times [2020-10-28 01:16:04,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195750680] [2020-10-28 01:16:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:07,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 01:16:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:16:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:16:09,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:16:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 01:16:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:16:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:09,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:09,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:09,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:09,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:16:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 01:16:09,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:16:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:16:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:09,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:16:09,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:16:09,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195750680] [2020-10-28 01:16:09,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 01:16:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074015258] [2020-10-28 01:16:09,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 01:16:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 01:16:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:16:09,617 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 13 states. [2020-10-28 01:16:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:10,877 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-10-28 01:16:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:16:10,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-28 01:16:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:10,880 INFO L225 Difference]: With dead ends: 109 [2020-10-28 01:16:10,880 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 01:16:10,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:16:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 01:16:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-10-28 01:16:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 01:16:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-10-28 01:16:10,914 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 59 [2020-10-28 01:16:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:10,914 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-10-28 01:16:10,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 01:16:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-10-28 01:16:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 01:16:10,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:10,916 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:10,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:16:10,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1750884257, now seen corresponding path program 2 times [2020-10-28 01:16:10,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:10,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846631454] [2020-10-28 01:16:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:15,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:15,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 01:16:15,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:16:15,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:16:15,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:16:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:16:15,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:16:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:16,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:16,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:16,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:16,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:16,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:16,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:16:16,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:16:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 01:16:16,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:16,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:16:16,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:16,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 01:16:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:16,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:16,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:16,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:16:16,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:16:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846631454] [2020-10-28 01:16:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:16,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 01:16:16,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19030546] [2020-10-28 01:16:16,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:16:16,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:16:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:16:16,402 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 12 states. [2020-10-28 01:16:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:17,309 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-10-28 01:16:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:16:17,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-28 01:16:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:17,314 INFO L225 Difference]: With dead ends: 119 [2020-10-28 01:16:17,314 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 01:16:17,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:16:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 01:16:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2020-10-28 01:16:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 01:16:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-10-28 01:16:17,330 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 60 [2020-10-28 01:16:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:17,331 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-10-28 01:16:17,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:16:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-10-28 01:16:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 01:16:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:17,332 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:17,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:16:17,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1307847269, now seen corresponding path program 1 times [2020-10-28 01:16:17,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:17,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154356278] [2020-10-28 01:16:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 01:16:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:16:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:22,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:22,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:16:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:16:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 01:16:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:22,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 01:16:22,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154356278] [2020-10-28 01:16:22,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:16:22,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 01:16:22,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121605183] [2020-10-28 01:16:22,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:16:22,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:16:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:16:22,519 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-10-28 01:16:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:23,052 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-10-28 01:16:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:16:23,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-28 01:16:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:23,056 INFO L225 Difference]: With dead ends: 98 [2020-10-28 01:16:23,056 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 01:16:23,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:16:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 01:16:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2020-10-28 01:16:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 01:16:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-28 01:16:23,083 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 63 [2020-10-28 01:16:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:23,083 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-28 01:16:23,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 01:16:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-28 01:16:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 01:16:23,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:23,089 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:23,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:16:23,089 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash 736210418, now seen corresponding path program 1 times [2020-10-28 01:16:23,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:23,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793377027] [2020-10-28 01:16:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 01:16:28,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 01:16:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:28,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:28,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:16:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:16:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:28,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:16:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:16:28,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793377027] [2020-10-28 01:16:28,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:28,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 01:16:28,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989840037] [2020-10-28 01:16:28,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 01:16:28,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:28,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 01:16:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:16:28,497 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 13 states. [2020-10-28 01:16:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:29,501 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2020-10-28 01:16:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:16:29,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-28 01:16:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:29,503 INFO L225 Difference]: With dead ends: 107 [2020-10-28 01:16:29,503 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 01:16:29,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:16:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 01:16:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-28 01:16:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 01:16:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2020-10-28 01:16:29,522 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 62 [2020-10-28 01:16:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:29,522 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2020-10-28 01:16:29,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 01:16:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2020-10-28 01:16:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 01:16:29,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:29,524 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:29,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:16:29,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:29,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1457615642, now seen corresponding path program 1 times [2020-10-28 01:16:29,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:29,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792275859] [2020-10-28 01:16:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:29,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:16:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:34,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:34,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:34,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:34,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:16:34,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:16:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:16:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:34,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:34,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:16:34,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:34,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 01:16:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 01:16:34,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792275859] [2020-10-28 01:16:34,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:34,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 01:16:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183282435] [2020-10-28 01:16:34,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:16:34,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:34,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:16:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:16:34,675 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 8 states. [2020-10-28 01:16:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:35,065 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2020-10-28 01:16:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:16:35,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-28 01:16:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:35,067 INFO L225 Difference]: With dead ends: 112 [2020-10-28 01:16:35,067 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 01:16:35,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:16:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 01:16:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-28 01:16:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 01:16:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2020-10-28 01:16:35,092 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 63 [2020-10-28 01:16:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:35,092 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2020-10-28 01:16:35,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:16:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2020-10-28 01:16:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 01:16:35,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:35,094 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:16:35,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:16:35,094 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash -388562664, now seen corresponding path program 1 times [2020-10-28 01:16:35,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:35,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984693181] [2020-10-28 01:16:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:16:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:16:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:40,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:40,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 01:16:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:16:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 01:16:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 01:16:40,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984693181] [2020-10-28 01:16:40,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:40,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:16:40,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12524730] [2020-10-28 01:16:40,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:16:40,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:40,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:16:40,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:16:40,239 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand 9 states. [2020-10-28 01:16:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:40,727 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2020-10-28 01:16:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:16:40,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-28 01:16:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:40,729 INFO L225 Difference]: With dead ends: 116 [2020-10-28 01:16:40,729 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 01:16:40,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:16:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 01:16:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2020-10-28 01:16:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 01:16:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2020-10-28 01:16:40,753 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 65 [2020-10-28 01:16:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:40,754 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2020-10-28 01:16:40,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:16:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2020-10-28 01:16:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 01:16:40,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:40,756 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] [2020-10-28 01:16:40,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:16:40,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:40,756 INFO L82 PathProgramCache]: Analyzing trace with hash -744421482, now seen corresponding path program 2 times [2020-10-28 01:16:40,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:40,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181087783] [2020-10-28 01:16:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:42,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:16:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:16:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:45,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:16:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:46,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:46,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:16:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 01:16:46,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:16:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:16:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 01:16:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:16:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:16:46,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181087783] [2020-10-28 01:16:46,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:46,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 01:16:46,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375550667] [2020-10-28 01:16:46,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 01:16:46,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:46,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 01:16:46,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 01:16:46,288 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand 20 states. [2020-10-28 01:16:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:48,110 INFO L93 Difference]: Finished difference Result 155 states and 198 transitions. [2020-10-28 01:16:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 01:16:48,110 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-28 01:16:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:48,114 INFO L225 Difference]: With dead ends: 155 [2020-10-28 01:16:48,114 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 01:16:48,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 01:16:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 01:16:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2020-10-28 01:16:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 01:16:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2020-10-28 01:16:48,156 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 67 [2020-10-28 01:16:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:48,156 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2020-10-28 01:16:48,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 01:16:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2020-10-28 01:16:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 01:16:48,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:48,158 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 01:16:48,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:16:48,158 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1093260182, now seen corresponding path program 3 times [2020-10-28 01:16:48,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:48,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236178941] [2020-10-28 01:16:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:16:53,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:16:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:16:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:16:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:16:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:16:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:16:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:16:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 01:16:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:53,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:16:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:16:53,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236178941] [2020-10-28 01:16:53,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:53,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 01:16:53,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737849236] [2020-10-28 01:16:53,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 01:16:53,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 01:16:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:16:53,501 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand 16 states. [2020-10-28 01:16:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:55,144 INFO L93 Difference]: Finished difference Result 229 states and 335 transitions. [2020-10-28 01:16:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 01:16:55,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-28 01:16:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:55,147 INFO L225 Difference]: With dead ends: 229 [2020-10-28 01:16:55,147 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 01:16:55,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 01:16:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 01:16:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 145. [2020-10-28 01:16:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 01:16:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 191 transitions. [2020-10-28 01:16:55,198 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 191 transitions. Word has length 69 [2020-10-28 01:16:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:55,198 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 191 transitions. [2020-10-28 01:16:55,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 01:16:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 191 transitions. [2020-10-28 01:16:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 01:16:55,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:55,203 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, 1] [2020-10-28 01:16:55,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:16:55,203 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1632952295, now seen corresponding path program 1 times [2020-10-28 01:16:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:55,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229699109] [2020-10-28 01:16:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 01:17:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:00,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:00,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:17:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:17:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 01:17:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 01:17:00,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:17:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:00,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:00,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:17:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 01:17:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:17:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:17:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:17:00,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229699109] [2020-10-28 01:17:00,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:00,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:17:00,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469918720] [2020-10-28 01:17:00,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:17:00,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:17:00,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:17:00,501 INFO L87 Difference]: Start difference. First operand 145 states and 191 transitions. Second operand 9 states. [2020-10-28 01:17:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:01,015 INFO L93 Difference]: Finished difference Result 217 states and 284 transitions. [2020-10-28 01:17:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:17:01,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-28 01:17:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:01,018 INFO L225 Difference]: With dead ends: 217 [2020-10-28 01:17:01,019 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 01:17:01,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:17:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 01:17:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2020-10-28 01:17:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 01:17:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 168 transitions. [2020-10-28 01:17:01,053 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 168 transitions. Word has length 70 [2020-10-28 01:17:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:01,054 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 168 transitions. [2020-10-28 01:17:01,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:17:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 168 transitions. [2020-10-28 01:17:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:17:01,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:01,055 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, 1, 1] [2020-10-28 01:17:01,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:17:01,055 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 736927431, now seen corresponding path program 4 times [2020-10-28 01:17:01,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:01,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66927853] [2020-10-28 01:17:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 01:17:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:06,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:06,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:06,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:17:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 01:17:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:06,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:17:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:17:06,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66927853] [2020-10-28 01:17:06,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:06,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:17:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438383824] [2020-10-28 01:17:06,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:17:06,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:06,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:17:06,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:17:06,275 INFO L87 Difference]: Start difference. First operand 131 states and 168 transitions. Second operand 9 states. [2020-10-28 01:17:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:06,965 INFO L93 Difference]: Finished difference Result 175 states and 227 transitions. [2020-10-28 01:17:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:17:06,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 01:17:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:06,967 INFO L225 Difference]: With dead ends: 175 [2020-10-28 01:17:06,967 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 01:17:06,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:17:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 01:17:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 121. [2020-10-28 01:17:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 01:17:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2020-10-28 01:17:06,997 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 71 [2020-10-28 01:17:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:06,997 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2020-10-28 01:17:06,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:17:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2020-10-28 01:17:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:17:06,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:06,999 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:06,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:17:06,999 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:06,999 INFO L82 PathProgramCache]: Analyzing trace with hash 680246055, now seen corresponding path program 2 times [2020-10-28 01:17:07,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:07,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124982887] [2020-10-28 01:17:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:17:12,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:17:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:17:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:17:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 01:17:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 01:17:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:17:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:17:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:17:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:17:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 01:17:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:17:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 01:17:12,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124982887] [2020-10-28 01:17:12,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:12,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:17:12,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508791415] [2020-10-28 01:17:12,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:17:12,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:17:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:17:12,859 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 14 states. [2020-10-28 01:17:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:14,172 INFO L93 Difference]: Finished difference Result 176 states and 216 transitions. [2020-10-28 01:17:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 01:17:14,173 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-10-28 01:17:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:14,175 INFO L225 Difference]: With dead ends: 176 [2020-10-28 01:17:14,176 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 01:17:14,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:17:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 01:17:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 126. [2020-10-28 01:17:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 01:17:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2020-10-28 01:17:14,205 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 71 [2020-10-28 01:17:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:14,206 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2020-10-28 01:17:14,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:17:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2020-10-28 01:17:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 01:17:14,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:14,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:14,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:17:14,208 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:14,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1413598657, now seen corresponding path program 1 times [2020-10-28 01:17:14,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:14,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556526793] [2020-10-28 01:17:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:17:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 01:17:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 01:17:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:19,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:19,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:17:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:17:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:17:19,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:17:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:19,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:17:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:17:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:17:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 01:17:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:19,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:17:19,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:17:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:17:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 01:17:19,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556526793] [2020-10-28 01:17:19,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:19,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:17:19,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070924818] [2020-10-28 01:17:19,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:17:19,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:19,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:17:19,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:17:19,822 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand 19 states. [2020-10-28 01:17:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:21,763 INFO L93 Difference]: Finished difference Result 215 states and 268 transitions. [2020-10-28 01:17:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:17:21,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2020-10-28 01:17:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:21,766 INFO L225 Difference]: With dead ends: 215 [2020-10-28 01:17:21,766 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 01:17:21,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=1384, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 01:17:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 01:17:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2020-10-28 01:17:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 01:17:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2020-10-28 01:17:21,796 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 75 [2020-10-28 01:17:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:21,797 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2020-10-28 01:17:21,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:17:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2020-10-28 01:17:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 01:17:21,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:21,799 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:21,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:17:21,799 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2056400756, now seen corresponding path program 3 times [2020-10-28 01:17:21,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:21,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852126597] [2020-10-28 01:17:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 01:17:26,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:17:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 01:17:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:17:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:17:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:27,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 01:17:27,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852126597] [2020-10-28 01:17:27,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:27,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:17:27,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864381607] [2020-10-28 01:17:27,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:17:27,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:27,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:17:27,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:17:27,077 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand 11 states. [2020-10-28 01:17:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:27,643 INFO L93 Difference]: Finished difference Result 226 states and 275 transitions. [2020-10-28 01:17:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:17:27,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-28 01:17:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:27,646 INFO L225 Difference]: With dead ends: 226 [2020-10-28 01:17:27,646 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 01:17:27,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:17:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 01:17:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2020-10-28 01:17:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 01:17:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2020-10-28 01:17:27,674 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 74 [2020-10-28 01:17:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:27,674 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2020-10-28 01:17:27,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:17:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2020-10-28 01:17:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 01:17:27,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:27,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:27,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 01:17:27,676 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:27,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1747571294, now seen corresponding path program 1 times [2020-10-28 01:17:27,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:27,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108092781] [2020-10-28 01:17:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:32,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 01:17:32,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:17:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 01:17:32,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 01:17:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 01:17:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 01:17:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:33,611 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-28 01:17:33,804 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-28 01:17:34,042 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 25 [2020-10-28 01:17:34,269 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 9 [2020-10-28 01:17:34,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:34,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:17:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:17:34,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:17:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:17:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:17:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:17:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:17:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:17:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:17:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 01:17:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:17:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 01:17:34,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:17:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 01:17:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 01:17:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:17:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:17:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:35,698 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 22 [2020-10-28 01:17:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 01:17:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:36,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:36,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 01:17:36,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108092781] [2020-10-28 01:17:36,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:36,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 01:17:36,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413374395] [2020-10-28 01:17:36,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 01:17:36,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:36,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 01:17:36,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:17:36,232 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand 21 states. [2020-10-28 01:17:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:38,514 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2020-10-28 01:17:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:17:38,515 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-10-28 01:17:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:38,517 INFO L225 Difference]: With dead ends: 173 [2020-10-28 01:17:38,517 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 01:17:38,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 01:17:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 01:17:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2020-10-28 01:17:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-28 01:17:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2020-10-28 01:17:38,549 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 76 [2020-10-28 01:17:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:38,549 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2020-10-28 01:17:38,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 01:17:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2020-10-28 01:17:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 01:17:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:38,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-28 01:17:38,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 01:17:38,551 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash 131372726, now seen corresponding path program 4 times [2020-10-28 01:17:38,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:38,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232782061] [2020-10-28 01:17:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:38,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 01:17:43,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 01:17:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:17:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 01:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:17:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:43,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:43,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:17:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:17:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 01:17:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:17:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 01:17:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:17:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 01:17:44,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232782061] [2020-10-28 01:17:44,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:44,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 01:17:44,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375029827] [2020-10-28 01:17:44,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 01:17:44,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 01:17:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:17:44,115 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 16 states. [2020-10-28 01:17:44,959 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-28 01:17:45,110 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-28 01:17:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:45,723 INFO L93 Difference]: Finished difference Result 164 states and 195 transitions. [2020-10-28 01:17:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:17:45,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-28 01:17:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:45,724 INFO L225 Difference]: With dead ends: 164 [2020-10-28 01:17:45,725 INFO L226 Difference]: Without dead ends: 149 [2020-10-28 01:17:45,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 01:17:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-28 01:17:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2020-10-28 01:17:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 01:17:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-10-28 01:17:45,755 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 76 [2020-10-28 01:17:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:45,756 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-10-28 01:17:45,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 01:17:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-10-28 01:17:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 01:17:45,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:45,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:17:45,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 01:17:45,757 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:45,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:45,758 INFO L82 PathProgramCache]: Analyzing trace with hash 917904054, now seen corresponding path program 5 times [2020-10-28 01:17:45,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:45,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372590179] [2020-10-28 01:17:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:17:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:17:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:17:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:17:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:17:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:17:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 01:17:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:17:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:17:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:50,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 01:17:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:51,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:51,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:17:51,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 01:17:51,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:17:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 01:17:51,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:17:51,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372590179] [2020-10-28 01:17:51,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:51,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 01:17:51,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053647809] [2020-10-28 01:17:51,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 01:17:51,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 01:17:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:17:51,151 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 16 states. [2020-10-28 01:17:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:17:52,641 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2020-10-28 01:17:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 01:17:52,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-28 01:17:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:17:52,643 INFO L225 Difference]: With dead ends: 199 [2020-10-28 01:17:52,643 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 01:17:52,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-10-28 01:17:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 01:17:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2020-10-28 01:17:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-28 01:17:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2020-10-28 01:17:52,686 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 78 [2020-10-28 01:17:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:17:52,687 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2020-10-28 01:17:52,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 01:17:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2020-10-28 01:17:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 01:17:52,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:17:52,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-28 01:17:52,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 01:17:52,689 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:17:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:17:52,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1287326669, now seen corresponding path program 1 times [2020-10-28 01:17:52,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:17:52,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021225269] [2020-10-28 01:17:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:17:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 01:17:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 01:17:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:57,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:57,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:17:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:17:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:17:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:17:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:17:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:17:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:17:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:17:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:17:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:57,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:17:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:57,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:57,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:17:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 01:17:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:58,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:58,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:17:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:17:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021225269] [2020-10-28 01:17:58,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:58,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:17:58,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236152280] [2020-10-28 01:17:58,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:17:58,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:58,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:17:58,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:17:58,446 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand 19 states. [2020-10-28 01:17:59,893 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-28 01:18:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:00,928 INFO L93 Difference]: Finished difference Result 199 states and 243 transitions. [2020-10-28 01:18:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 01:18:00,930 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-28 01:18:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:00,931 INFO L225 Difference]: With dead ends: 199 [2020-10-28 01:18:00,931 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 01:18:00,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 01:18:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 01:18:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2020-10-28 01:18:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 01:18:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 209 transitions. [2020-10-28 01:18:00,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 209 transitions. Word has length 78 [2020-10-28 01:18:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:00,975 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 209 transitions. [2020-10-28 01:18:00,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:18:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 209 transitions. [2020-10-28 01:18:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 01:18:00,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:00,977 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-28 01:18:00,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 01:18:00,977 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2140889482, now seen corresponding path program 6 times [2020-10-28 01:18:00,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:00,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583362039] [2020-10-28 01:18:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 01:18:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 01:18:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 01:18:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 01:18:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 01:18:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:18:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:18:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:18:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:18:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:18:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:18:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 01:18:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:06,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:06,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:06,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:18:06,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 01:18:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583362039] [2020-10-28 01:18:06,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 01:18:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837162420] [2020-10-28 01:18:06,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 01:18:06,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:06,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 01:18:06,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 01:18:06,750 INFO L87 Difference]: Start difference. First operand 170 states and 209 transitions. Second operand 18 states. [2020-10-28 01:18:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:08,501 INFO L93 Difference]: Finished difference Result 236 states and 299 transitions. [2020-10-28 01:18:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 01:18:08,502 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-28 01:18:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:08,505 INFO L225 Difference]: With dead ends: 236 [2020-10-28 01:18:08,505 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 01:18:08,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 01:18:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 01:18:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 176. [2020-10-28 01:18:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-28 01:18:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2020-10-28 01:18:08,555 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 80 [2020-10-28 01:18:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:08,556 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2020-10-28 01:18:08,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 01:18:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2020-10-28 01:18:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 01:18:08,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:08,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 01:18:08,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 01:18:08,558 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash -236061455, now seen corresponding path program 2 times [2020-10-28 01:18:08,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:08,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709604075] [2020-10-28 01:18:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 01:18:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:18:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:18:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 01:18:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 01:18:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:18:13,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:18:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:18:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:18:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:13,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:13,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 01:18:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:18:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 01:18:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:13,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:13,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 01:18:13,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 01:18:13,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:13,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:18:13,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:18:13,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:18:13,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 01:18:14,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709604075] [2020-10-28 01:18:14,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:14,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:18:14,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349856717] [2020-10-28 01:18:14,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:18:14,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:18:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:18:14,062 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand 14 states. [2020-10-28 01:18:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:14,989 INFO L93 Difference]: Finished difference Result 219 states and 283 transitions. [2020-10-28 01:18:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:18:14,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-28 01:18:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:14,992 INFO L225 Difference]: With dead ends: 219 [2020-10-28 01:18:14,992 INFO L226 Difference]: Without dead ends: 202 [2020-10-28 01:18:14,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-28 01:18:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-28 01:18:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 193. [2020-10-28 01:18:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 01:18:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 244 transitions. [2020-10-28 01:18:15,048 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 244 transitions. Word has length 80 [2020-10-28 01:18:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:15,048 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 244 transitions. [2020-10-28 01:18:15,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:18:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 244 transitions. [2020-10-28 01:18:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 01:18:15,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:15,051 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:15,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 01:18:15,051 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:15,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:15,051 INFO L82 PathProgramCache]: Analyzing trace with hash 499933925, now seen corresponding path program 7 times [2020-10-28 01:18:15,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:15,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264939438] [2020-10-28 01:18:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:18:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 01:18:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:20,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:20,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:18:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:18:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:18:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:18:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:18:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:18:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 01:18:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 01:18:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:20,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:20,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 01:18:20,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264939438] [2020-10-28 01:18:20,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:20,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 01:18:20,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001150624] [2020-10-28 01:18:20,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 01:18:20,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:20,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 01:18:20,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:18:20,529 INFO L87 Difference]: Start difference. First operand 193 states and 244 transitions. Second operand 13 states. [2020-10-28 01:18:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:21,430 INFO L93 Difference]: Finished difference Result 278 states and 344 transitions. [2020-10-28 01:18:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:18:21,430 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-28 01:18:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:21,432 INFO L225 Difference]: With dead ends: 278 [2020-10-28 01:18:21,432 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 01:18:21,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:18:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 01:18:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 181. [2020-10-28 01:18:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-28 01:18:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 223 transitions. [2020-10-28 01:18:21,482 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 223 transitions. Word has length 82 [2020-10-28 01:18:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:21,483 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 223 transitions. [2020-10-28 01:18:21,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 01:18:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 223 transitions. [2020-10-28 01:18:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:18:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:21,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:21,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 01:18:21,488 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1244180343, now seen corresponding path program 2 times [2020-10-28 01:18:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:21,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248044261] [2020-10-28 01:18:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:21,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 01:18:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:26,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:18:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:18:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:18:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:26,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:26,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 01:18:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:18:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 01:18:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:18:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 01:18:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 01:18:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:26,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:26,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:26,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:18:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 01:18:26,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248044261] [2020-10-28 01:18:26,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:26,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 01:18:26,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100494828] [2020-10-28 01:18:26,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:18:26,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:26,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:18:26,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:18:26,747 INFO L87 Difference]: Start difference. First operand 181 states and 223 transitions. Second operand 12 states. [2020-10-28 01:18:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:27,469 INFO L93 Difference]: Finished difference Result 197 states and 240 transitions. [2020-10-28 01:18:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:18:27,469 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-28 01:18:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:27,471 INFO L225 Difference]: With dead ends: 197 [2020-10-28 01:18:27,472 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 01:18:27,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:18:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 01:18:27,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2020-10-28 01:18:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 01:18:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 186 transitions. [2020-10-28 01:18:27,507 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 186 transitions. Word has length 84 [2020-10-28 01:18:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:27,507 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 186 transitions. [2020-10-28 01:18:27,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:18:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 186 transitions. [2020-10-28 01:18:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 01:18:27,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:27,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-10-28 01:18:27,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 01:18:27,509 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:27,510 INFO L82 PathProgramCache]: Analyzing trace with hash 13679535, now seen corresponding path program 3 times [2020-10-28 01:18:27,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:27,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371121136] [2020-10-28 01:18:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 01:18:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 01:18:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 01:18:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:32,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:18:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:18:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:32,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:32,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:18:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:32,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 01:18:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:32,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:32,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:32,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 01:18:32,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:18:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:18:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 01:18:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:33,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 01:18:33,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 01:18:33,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:18:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 01:18:33,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371121136] [2020-10-28 01:18:33,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:33,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 01:18:33,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471815493] [2020-10-28 01:18:33,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 01:18:33,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 01:18:33,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-28 01:18:33,759 INFO L87 Difference]: Start difference. First operand 150 states and 186 transitions. Second operand 23 states. [2020-10-28 01:18:34,686 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-28 01:18:34,961 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-10-28 01:18:35,418 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2020-10-28 01:18:35,812 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 103 [2020-10-28 01:18:35,990 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-10-28 01:18:36,245 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-10-28 01:18:36,628 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-28 01:18:36,868 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-10-28 01:18:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:37,556 INFO L93 Difference]: Finished difference Result 199 states and 259 transitions. [2020-10-28 01:18:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 01:18:37,557 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 82 [2020-10-28 01:18:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:37,561 INFO L225 Difference]: With dead ends: 199 [2020-10-28 01:18:37,561 INFO L226 Difference]: Without dead ends: 196 [2020-10-28 01:18:37,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 01:18:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-28 01:18:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 179. [2020-10-28 01:18:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-28 01:18:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 232 transitions. [2020-10-28 01:18:37,617 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 232 transitions. Word has length 82 [2020-10-28 01:18:37,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:37,617 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 232 transitions. [2020-10-28 01:18:37,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 01:18:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 232 transitions. [2020-10-28 01:18:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 01:18:37,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:37,619 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2020-10-28 01:18:37,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 01:18:37,620 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1482022292, now seen corresponding path program 8 times [2020-10-28 01:18:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:37,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348238960] [2020-10-28 01:18:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:18:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:18:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:18:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:18:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:42,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:42,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:42,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:18:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:43,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:43,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:43,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-28 01:18:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:18:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:18:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:18:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 01:18:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:18:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:18:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:18:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-28 01:18:43,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348238960] [2020-10-28 01:18:43,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:43,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 01:18:43,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941693463] [2020-10-28 01:18:43,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 01:18:43,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:43,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 01:18:43,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:18:43,834 INFO L87 Difference]: Start difference. First operand 179 states and 232 transitions. Second operand 24 states. [2020-10-28 01:18:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:46,441 INFO L93 Difference]: Finished difference Result 275 states and 405 transitions. [2020-10-28 01:18:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 01:18:46,445 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 83 [2020-10-28 01:18:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:46,448 INFO L225 Difference]: With dead ends: 275 [2020-10-28 01:18:46,448 INFO L226 Difference]: Without dead ends: 230 [2020-10-28 01:18:46,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=260, Invalid=2190, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 01:18:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-28 01:18:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 183. [2020-10-28 01:18:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 01:18:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 236 transitions. [2020-10-28 01:18:46,515 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 236 transitions. Word has length 83 [2020-10-28 01:18:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:46,515 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 236 transitions. [2020-10-28 01:18:46,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 01:18:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 236 transitions. [2020-10-28 01:18:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 01:18:46,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:46,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-28 01:18:46,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 01:18:46,517 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:46,518 INFO L82 PathProgramCache]: Analyzing trace with hash 533994749, now seen corresponding path program 4 times [2020-10-28 01:18:46,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:46,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311614281] [2020-10-28 01:18:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 01:18:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:18:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:18:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:18:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 01:18:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:18:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 01:18:51,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:18:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 01:18:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 01:18:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:51,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:18:51,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:18:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 01:18:51,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311614281] [2020-10-28 01:18:51,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:51,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:18:51,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344018991] [2020-10-28 01:18:51,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:18:51,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:18:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:18:51,966 INFO L87 Difference]: Start difference. First operand 183 states and 236 transitions. Second operand 14 states. [2020-10-28 01:18:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:18:53,203 INFO L93 Difference]: Finished difference Result 228 states and 290 transitions. [2020-10-28 01:18:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:18:53,204 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-28 01:18:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:18:53,205 INFO L225 Difference]: With dead ends: 228 [2020-10-28 01:18:53,206 INFO L226 Difference]: Without dead ends: 213 [2020-10-28 01:18:53,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:18:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-28 01:18:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2020-10-28 01:18:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 01:18:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 203 transitions. [2020-10-28 01:18:53,257 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 203 transitions. Word has length 83 [2020-10-28 01:18:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:18:53,257 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 203 transitions. [2020-10-28 01:18:53,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:18:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 203 transitions. [2020-10-28 01:18:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:18:53,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:18:53,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:18:53,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 01:18:53,259 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:18:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:18:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash 190605351, now seen corresponding path program 9 times [2020-10-28 01:18:53,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:18:53,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168826753] [2020-10-28 01:18:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:18:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:55,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 01:18:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:18:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:18:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:18:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:18:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:18:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:18:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:18:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:18:58,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:18:58,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:18:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:18:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:18:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:18:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 01:18:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:18:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:18:58,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:18:58,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:18:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:18:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 01:18:58,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168826753] [2020-10-28 01:18:58,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:18:58,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:18:58,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680183912] [2020-10-28 01:18:58,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:18:58,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:18:58,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:18:58,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:18:58,825 INFO L87 Difference]: Start difference. First operand 163 states and 203 transitions. Second operand 19 states. [2020-10-28 01:19:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:00,062 INFO L93 Difference]: Finished difference Result 268 states and 341 transitions. [2020-10-28 01:19:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:19:00,062 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2020-10-28 01:19:00,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:00,065 INFO L225 Difference]: With dead ends: 268 [2020-10-28 01:19:00,065 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 01:19:00,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-28 01:19:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 01:19:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 170. [2020-10-28 01:19:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 01:19:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 211 transitions. [2020-10-28 01:19:00,110 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 211 transitions. Word has length 84 [2020-10-28 01:19:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:00,110 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 211 transitions. [2020-10-28 01:19:00,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:19:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 211 transitions. [2020-10-28 01:19:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:19:00,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:00,112 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-10-28 01:19:00,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 01:19:00,112 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -503397651, now seen corresponding path program 5 times [2020-10-28 01:19:00,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:00,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358324222] [2020-10-28 01:19:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 01:19:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:19:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:19:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 01:19:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 01:19:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:05,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:19:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:19:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:19:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:19:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 01:19:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 01:19:05,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358324222] [2020-10-28 01:19:05,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:19:05,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 01:19:05,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852153600] [2020-10-28 01:19:05,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 01:19:05,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:19:05,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 01:19:05,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:19:05,487 INFO L87 Difference]: Start difference. First operand 170 states and 211 transitions. Second operand 15 states. [2020-10-28 01:19:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:19:06,344 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2020-10-28 01:19:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:19:06,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 84 [2020-10-28 01:19:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:19:06,347 INFO L225 Difference]: With dead ends: 241 [2020-10-28 01:19:06,347 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 01:19:06,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-28 01:19:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 01:19:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2020-10-28 01:19:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-28 01:19:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 214 transitions. [2020-10-28 01:19:06,399 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 214 transitions. Word has length 84 [2020-10-28 01:19:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:19:06,400 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 214 transitions. [2020-10-28 01:19:06,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 01:19:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 214 transitions. [2020-10-28 01:19:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 01:19:06,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:19:06,401 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:19:06,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 01:19:06,402 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:19:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:19:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash -391139873, now seen corresponding path program 10 times [2020-10-28 01:19:06,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:19:06,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569759880] [2020-10-28 01:19:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:19:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 01:19:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 01:19:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 01:19:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:19:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:19:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:19:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 01:19:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:19:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 01:19:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:19:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:19:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:19:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:19:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:19:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:19:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:19:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:19:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:19:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:19:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:19:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:19:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:19:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking...