/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=SHALLOWEST --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/array-tiling/nr5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:53:48,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:53:48,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:53:48,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:53:48,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:53:48,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:53:48,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:53:48,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:53:48,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:53:48,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:53:48,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:53:48,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:53:48,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:53:48,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:53:49,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:53:49,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:53:49,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:53:49,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:53:49,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:53:49,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:53:49,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:53:49,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:53:49,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:53:49,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:53:49,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:53:49,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:53:49,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:53:49,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:53:49,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:53:49,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:53:49,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:53:49,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:53:49,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:53:49,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:53:49,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:53:49,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:53:49,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:53:49,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:53:49,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:53:49,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:53:49,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:53:49,089 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 [2020-10-26 19:53:49,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:53:49,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:53:49,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:53:49,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:53:49,149 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:53:49,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:53:49,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:53:49,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:53:49,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:53:49,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:53:49,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:53:49,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:53:49,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:53:49,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:53:49,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:53:49,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:53:49,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:53:49,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:53:49,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:53:49,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:53:49,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:53:49,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:53:49,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:53:49,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:53:49,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:53:49,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:53:49,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:53:49,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:53:49,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:53:49,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:53:49,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:53:49,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:53:49,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:53:49,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:53:49,748 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:53:49,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr5.c [2020-10-26 19:53:49,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46abd99d/bdde0335017f4575b5f4a1fffece3404/FLAG7b0fa4eaf [2020-10-26 19:53:50,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:53:50,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr5.c [2020-10-26 19:53:50,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46abd99d/bdde0335017f4575b5f4a1fffece3404/FLAG7b0fa4eaf [2020-10-26 19:53:50,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46abd99d/bdde0335017f4575b5f4a1fffece3404 [2020-10-26 19:53:50,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:53:50,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:53:50,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:53:50,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:53:50,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:53:50,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:50" (1/1) ... [2020-10-26 19:53:50,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f66b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:50, skipping insertion in model container [2020-10-26 19:53:50,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:50" (1/1) ... [2020-10-26 19:53:50,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:53:50,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:53:51,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:53:51,091 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:53:51,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:53:51,134 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:53:51,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51 WrapperNode [2020-10-26 19:53:51,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:53:51,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:53:51,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:53:51,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:53:51,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (1/1) ... [2020-10-26 19:53:51,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:53:51,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:53:51,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:53:51,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:53:51,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (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 [2020-10-26 19:53:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:53:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:53:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:53:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:53:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:53:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:53:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:53:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:53:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:53:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:53:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:53:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:53:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:53:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:53:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:53:51,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:53:51,633 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:53:51,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:51 BoogieIcfgContainer [2020-10-26 19:53:51,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:53:51,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:53:51,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:53:51,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:53:51,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:53:50" (1/3) ... [2020-10-26 19:53:51,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ed1735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:51, skipping insertion in model container [2020-10-26 19:53:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:51" (2/3) ... [2020-10-26 19:53:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ed1735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:51, skipping insertion in model container [2020-10-26 19:53:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:51" (3/3) ... [2020-10-26 19:53:51,644 INFO L111 eAbstractionObserver]: Analyzing ICFG nr5.c [2020-10-26 19:53:51,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:53:51,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:53:51,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:53:51,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:53:51,723 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:53:51,723 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:53:51,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:53:51,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:53:51,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:53:51,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:53:51,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:53:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:53:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:53:51,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:51,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:51,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -71068241, now seen corresponding path program 1 times [2020-10-26 19:53:51,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:51,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339848375] [2020-10-26 19:53:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:53:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-26 19:53:52,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 19:53:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:53:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:52,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:52,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:52,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 19:53:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:52,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:52,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339848375] [2020-10-26 19:53:52,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:52,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:53:52,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113350032] [2020-10-26 19:53:52,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:53:52,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:53:52,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:53:52,584 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-26 19:53:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:52,718 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-26 19:53:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:53:52,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-26 19:53:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:52,729 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:53:52,730 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 19:53:52,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:53:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 19:53:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-26 19:53:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 19:53:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 19:53:52,783 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-26 19:53:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:52,783 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 19:53:52,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:53:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-26 19:53:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:53:52,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:52,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:52,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:53:52,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2036094566, now seen corresponding path program 1 times [2020-10-26 19:53:52,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:52,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361889254] [2020-10-26 19:53:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 19:53:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:53,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:53,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:53,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361889254] [2020-10-26 19:53:53,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:53,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:53:53,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32757799] [2020-10-26 19:53:53,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:53,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:53,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:53,966 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2020-10-26 19:53:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:54,195 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-26 19:53:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:53:54,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-26 19:53:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:54,198 INFO L225 Difference]: With dead ends: 55 [2020-10-26 19:53:54,199 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 19:53:54,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:53:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 19:53:54,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-26 19:53:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 19:53:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 19:53:54,215 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-26 19:53:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:54,216 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 19:53:54,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 19:53:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 19:53:54,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:54,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:53:54,218 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash -640613893, now seen corresponding path program 1 times [2020-10-26 19:53:54,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:54,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841924008] [2020-10-26 19:53:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:54,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:53:54,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:53:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:54,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:54,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:54,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841924008] [2020-10-26 19:53:54,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:54,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:53:54,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879030955] [2020-10-26 19:53:54,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:53:54,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:54,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:53:54,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:53:54,376 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-26 19:53:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:54,470 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-26 19:53:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:53:54,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 19:53:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:54,472 INFO L225 Difference]: With dead ends: 54 [2020-10-26 19:53:54,472 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 19:53:54,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:53:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 19:53:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-26 19:53:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:53:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 19:53:54,482 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-10-26 19:53:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:54,482 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 19:53:54,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:53:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 19:53:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 19:53:54,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:54,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:54,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:53:54,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash 113037761, now seen corresponding path program 1 times [2020-10-26 19:53:54,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:54,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823078024] [2020-10-26 19:53:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:55,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 19:53:55,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 19:53:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:55,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:55,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:55,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:55,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823078024] [2020-10-26 19:53:55,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:55,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:53:55,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678041401] [2020-10-26 19:53:55,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:55,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:55,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:55,108 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-10-26 19:53:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:55,237 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-26 19:53:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:53:55,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-26 19:53:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:55,239 INFO L225 Difference]: With dead ends: 56 [2020-10-26 19:53:55,239 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 19:53:55,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 19:53:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 19:53:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 19:53:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-26 19:53:55,248 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2020-10-26 19:53:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:55,249 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-26 19:53:55,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-26 19:53:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:53:55,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:55,250 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 19:53:55,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:53:55,251 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1768599869, now seen corresponding path program 1 times [2020-10-26 19:53:55,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:55,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124958109] [2020-10-26 19:53:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:53:56,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-10-26 19:53:56,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:53:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 19:53:56,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:56,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124958109] [2020-10-26 19:53:56,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:56,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:53:56,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186323056] [2020-10-26 19:53:56,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:56,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:56,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:56,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:56,479 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-10-26 19:53:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:56,640 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-26 19:53:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:53:56,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-26 19:53:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:56,641 INFO L225 Difference]: With dead ends: 63 [2020-10-26 19:53:56,641 INFO L226 Difference]: Without dead ends: 41 [2020-10-26 19:53:56,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-26 19:53:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-26 19:53:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 19:53:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-26 19:53:56,662 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2020-10-26 19:53:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:56,662 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-26 19:53:56,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-26 19:53:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:53:56,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:56,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-26 19:53:56,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:53:56,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 236000387, now seen corresponding path program 2 times [2020-10-26 19:53:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:56,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585146725] [2020-10-26 19:53:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:58,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:53:58,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-26 19:53:58,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:53:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 19:53:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:58,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:58,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:58,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585146725] [2020-10-26 19:53:58,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:58,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 19:53:58,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156140260] [2020-10-26 19:53:58,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:53:58,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:58,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:53:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:53:58,612 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2020-10-26 19:53:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:58,813 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-10-26 19:53:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:53:58,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-26 19:53:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:58,816 INFO L225 Difference]: With dead ends: 69 [2020-10-26 19:53:58,816 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 19:53:58,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:53:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 19:53:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-26 19:53:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 19:53:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-26 19:53:58,833 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 35 [2020-10-26 19:53:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:58,836 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-26 19:53:58,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:53:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-26 19:53:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-26 19:53:58,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:58,837 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:58,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:53:58,837 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1932811395, now seen corresponding path program 3 times [2020-10-26 19:53:58,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:58,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221191700] [2020-10-26 19:53:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:54:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:54:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2320 [2020-10-26 19:54:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 19:54:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 19:54:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:01,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:01,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:01,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:01,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:01,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:54:01,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221191700] [2020-10-26 19:54:01,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:01,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:54:01,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230657810] [2020-10-26 19:54:01,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:54:01,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:54:01,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:54:01,290 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-26 19:54:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:01,489 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-26 19:54:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 19:54:01,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-26 19:54:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:01,491 INFO L225 Difference]: With dead ends: 74 [2020-10-26 19:54:01,491 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 19:54:01,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:54:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 19:54:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-26 19:54:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 19:54:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-26 19:54:01,499 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 38 [2020-10-26 19:54:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:01,499 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-26 19:54:01,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:54:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-26 19:54:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-26 19:54:01,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:01,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:01,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:54:01,501 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:01,502 INFO L82 PathProgramCache]: Analyzing trace with hash 483392067, now seen corresponding path program 4 times [2020-10-26 19:54:01,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:01,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922294694] [2020-10-26 19:54:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:54:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:54:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:54:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:54:03,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922294694] [2020-10-26 19:54:03,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:03,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:54:03,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895443376] [2020-10-26 19:54:03,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:54:03,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:03,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:54:03,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:54:03,860 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 14 states. [2020-10-26 19:54:04,288 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-26 19:54:04,649 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-26 19:54:05,554 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-26 19:54:05,855 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-26 19:54:06,019 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-26 19:54:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:06,123 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-10-26 19:54:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:54:06,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-26 19:54:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:06,127 INFO L225 Difference]: With dead ends: 97 [2020-10-26 19:54:06,127 INFO L226 Difference]: Without dead ends: 85 [2020-10-26 19:54:06,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:54:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-26 19:54:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 48. [2020-10-26 19:54:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-26 19:54:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-26 19:54:06,140 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 41 [2020-10-26 19:54:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:06,140 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-26 19:54:06,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:54:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-26 19:54:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-26 19:54:06,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:06,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:06,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:54:06,142 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:06,142 INFO L82 PathProgramCache]: Analyzing trace with hash 426133765, now seen corresponding path program 1 times [2020-10-26 19:54:06,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:06,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438014241] [2020-10-26 19:54:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:54:08,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:54:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-10-26 19:54:08,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:54:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 19:54:08,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:08,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:54:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:54:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:54:08,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438014241] [2020-10-26 19:54:08,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:08,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:54:08,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835907568] [2020-10-26 19:54:08,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:54:08,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:08,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:54:08,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:54:08,779 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 16 states. [2020-10-26 19:54:13,438 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-26 19:54:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:13,691 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2020-10-26 19:54:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-26 19:54:13,692 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-26 19:54:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:13,694 INFO L225 Difference]: With dead ends: 116 [2020-10-26 19:54:13,694 INFO L226 Difference]: Without dead ends: 113 [2020-10-26 19:54:13,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=595, Invalid=2711, Unknown=0, NotChecked=0, Total=3306 [2020-10-26 19:54:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-26 19:54:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 53. [2020-10-26 19:54:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 19:54:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-26 19:54:13,728 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 41 [2020-10-26 19:54:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:13,728 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-26 19:54:13,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:54:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-26 19:54:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 19:54:13,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:13,730 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-26 19:54:13,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:54:13,732 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1342919743, now seen corresponding path program 1 times [2020-10-26 19:54:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:13,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725369751] [2020-10-26 19:54:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:54:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:54:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4393 [2020-10-26 19:54:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:54:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 19:54:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:54:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:54:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 19:54:18,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725369751] [2020-10-26 19:54:18,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:18,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:54:18,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040961444] [2020-10-26 19:54:18,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:54:18,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:18,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:54:18,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:54:18,545 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 14 states. [2020-10-26 19:54:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:20,817 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-10-26 19:54:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 19:54:20,819 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-26 19:54:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:20,820 INFO L225 Difference]: With dead ends: 113 [2020-10-26 19:54:20,820 INFO L226 Difference]: Without dead ends: 96 [2020-10-26 19:54:20,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=339, Invalid=1301, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:54:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-26 19:54:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 58. [2020-10-26 19:54:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 19:54:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-26 19:54:20,836 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 50 [2020-10-26 19:54:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:20,837 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-26 19:54:20,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:54:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-26 19:54:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-26 19:54:20,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:20,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 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] [2020-10-26 19:54:20,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:54:20,840 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1756153859, now seen corresponding path program 2 times [2020-10-26 19:54:20,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:20,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132764426] [2020-10-26 19:54:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 19:54:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:54:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 19:54:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:54:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:54:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:26,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:26,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:54:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:26,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 19:54:26,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132764426] [2020-10-26 19:54:26,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:26,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:54:26,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417172642] [2020-10-26 19:54:26,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:54:26,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:26,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:54:26,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:54:26,251 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 14 states. [2020-10-26 19:54:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:28,000 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-26 19:54:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 19:54:28,001 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-26 19:54:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:28,005 INFO L225 Difference]: With dead ends: 126 [2020-10-26 19:54:28,005 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 19:54:28,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 19:54:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 19:54:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 63. [2020-10-26 19:54:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-26 19:54:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-10-26 19:54:28,024 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 59 [2020-10-26 19:54:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:28,024 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-10-26 19:54:28,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:54:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-10-26 19:54:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 19:54:28,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:28,026 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:28,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:54:28,026 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 37967361, now seen corresponding path program 3 times [2020-10-26 19:54:28,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:28,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068261986] [2020-10-26 19:54:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 19:54:33,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 19:54:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:54:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:33,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 19:54:33,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068261986] [2020-10-26 19:54:33,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:33,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:54:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353386623] [2020-10-26 19:54:33,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:54:33,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:54:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:54:33,386 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 13 states. [2020-10-26 19:54:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:34,812 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2020-10-26 19:54:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:54:34,813 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-26 19:54:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:34,814 INFO L225 Difference]: With dead ends: 147 [2020-10-26 19:54:34,814 INFO L226 Difference]: Without dead ends: 130 [2020-10-26 19:54:34,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:54:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-26 19:54:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 68. [2020-10-26 19:54:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 19:54:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-10-26 19:54:34,851 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 68 [2020-10-26 19:54:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:34,851 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-10-26 19:54:34,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:54:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-10-26 19:54:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-26 19:54:34,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:34,860 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:34,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:54:34,860 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:34,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1516657213, now seen corresponding path program 4 times [2020-10-26 19:54:34,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:34,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087572201] [2020-10-26 19:54:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 19:54:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:40,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:54:40,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:40,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:40,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:54:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:40,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-26 19:54:40,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087572201] [2020-10-26 19:54:40,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:40,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:54:40,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881454702] [2020-10-26 19:54:40,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:54:40,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:40,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:54:40,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:54:40,225 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 15 states. [2020-10-26 19:54:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:41,353 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2020-10-26 19:54:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:54:41,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-26 19:54:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:41,359 INFO L225 Difference]: With dead ends: 131 [2020-10-26 19:54:41,359 INFO L226 Difference]: Without dead ends: 128 [2020-10-26 19:54:41,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2020-10-26 19:54:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-26 19:54:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2020-10-26 19:54:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-26 19:54:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2020-10-26 19:54:41,387 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 77 [2020-10-26 19:54:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:41,388 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2020-10-26 19:54:41,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:54:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2020-10-26 19:54:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 19:54:41,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:41,390 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:41,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:54:41,390 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash -531970877, now seen corresponding path program 5 times [2020-10-26 19:54:41,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:41,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985961697] [2020-10-26 19:54:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 19:54:42,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:42,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:42,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:42,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:54:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:54:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:42,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:42,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 19:54:42,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985961697] [2020-10-26 19:54:42,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:42,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:54:42,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057125626] [2020-10-26 19:54:42,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:54:42,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:42,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:54:42,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:54:42,648 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 15 states. [2020-10-26 19:54:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:43,708 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2020-10-26 19:54:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:54:43,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-26 19:54:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:43,711 INFO L225 Difference]: With dead ends: 156 [2020-10-26 19:54:43,711 INFO L226 Difference]: Without dead ends: 103 [2020-10-26 19:54:43,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:54:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-26 19:54:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2020-10-26 19:54:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-26 19:54:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-26 19:54:43,731 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 86 [2020-10-26 19:54:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:43,731 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-26 19:54:43,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:54:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-26 19:54:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 19:54:43,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:43,733 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:43,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:54:43,733 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash 102120876, now seen corresponding path program 6 times [2020-10-26 19:54:43,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:43,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191087963] [2020-10-26 19:54:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:48,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 19:54:48,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 19:54:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:49,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:49,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:49,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:49,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:49,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:49,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 10 proven. 177 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-26 19:54:49,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191087963] [2020-10-26 19:54:49,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:49,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:54:49,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348188994] [2020-10-26 19:54:49,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:54:49,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:49,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:54:49,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:54:49,691 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 22 states. [2020-10-26 19:54:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:52,493 INFO L93 Difference]: Finished difference Result 162 states and 189 transitions. [2020-10-26 19:54:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:54:52,493 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2020-10-26 19:54:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:52,495 INFO L225 Difference]: With dead ends: 162 [2020-10-26 19:54:52,496 INFO L226 Difference]: Without dead ends: 159 [2020-10-26 19:54:52,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=528, Invalid=2124, Unknown=0, NotChecked=0, Total=2652 [2020-10-26 19:54:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-26 19:54:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2020-10-26 19:54:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-26 19:54:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2020-10-26 19:54:52,527 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 95 [2020-10-26 19:54:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:52,528 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2020-10-26 19:54:52,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:54:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2020-10-26 19:54:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-26 19:54:52,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:52,529 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:52,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:54:52,530 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1942302796, now seen corresponding path program 7 times [2020-10-26 19:54:52,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:52,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273257572] [2020-10-26 19:54:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 19:54:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:54:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:54:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:54:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:54:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:58,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:58,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 10 proven. 210 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-26 19:54:58,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273257572] [2020-10-26 19:54:58,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:58,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:54:58,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525022583] [2020-10-26 19:54:58,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:54:58,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:54:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:54:58,586 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 25 states. [2020-10-26 19:55:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:02,076 INFO L93 Difference]: Finished difference Result 280 states and 330 transitions. [2020-10-26 19:55:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-26 19:55:02,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2020-10-26 19:55:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:02,081 INFO L225 Difference]: With dead ends: 280 [2020-10-26 19:55:02,082 INFO L226 Difference]: Without dead ends: 277 [2020-10-26 19:55:02,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=597, Invalid=3063, Unknown=0, NotChecked=0, Total=3660 [2020-10-26 19:55:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-26 19:55:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 196. [2020-10-26 19:55:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-26 19:55:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2020-10-26 19:55:02,123 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 98 [2020-10-26 19:55:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:02,124 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2020-10-26 19:55:02,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:55:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2020-10-26 19:55:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 19:55:02,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:02,125 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:02,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:55:02,126 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:02,126 INFO L82 PathProgramCache]: Analyzing trace with hash -436690772, now seen corresponding path program 8 times [2020-10-26 19:55:02,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:02,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199314005] [2020-10-26 19:55:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5430 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 19:55:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:55:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:55:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:55:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:55:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:55:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:55:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 117 proven. 75 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-26 19:55:07,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199314005] [2020-10-26 19:55:07,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:07,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:55:07,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415974387] [2020-10-26 19:55:07,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:55:07,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:55:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:55:07,733 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand 9 states. [2020-10-26 19:55:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:07,945 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2020-10-26 19:55:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 19:55:07,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-26 19:55:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:07,948 INFO L225 Difference]: With dead ends: 267 [2020-10-26 19:55:07,948 INFO L226 Difference]: Without dead ends: 97 [2020-10-26 19:55:07,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:55:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-26 19:55:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-26 19:55:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:55:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2020-10-26 19:55:07,967 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 101 [2020-10-26 19:55:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:07,967 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2020-10-26 19:55:07,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:55:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2020-10-26 19:55:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 19:55:07,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:07,969 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:07,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:55:07,969 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:07,970 INFO L82 PathProgramCache]: Analyzing trace with hash -203422982, now seen corresponding path program 9 times [2020-10-26 19:55:07,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:07,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912971719] [2020-10-26 19:55:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:55:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-26 19:55:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:13,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:13,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 19:55:13,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912971719] [2020-10-26 19:55:13,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:13,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:55:13,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16803082] [2020-10-26 19:55:13,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:55:13,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:13,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:55:13,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:55:13,735 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 20 states. [2020-10-26 19:55:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:17,375 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2020-10-26 19:55:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-26 19:55:17,376 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-26 19:55:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:17,377 INFO L225 Difference]: With dead ends: 161 [2020-10-26 19:55:17,377 INFO L226 Difference]: Without dead ends: 144 [2020-10-26 19:55:17,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=401, Invalid=3021, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 19:55:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-26 19:55:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2020-10-26 19:55:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 19:55:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-26 19:55:17,405 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 104 [2020-10-26 19:55:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:17,406 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-26 19:55:17,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:55:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-26 19:55:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 19:55:17,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:17,407 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:17,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:55:17,408 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1225948950, now seen corresponding path program 10 times [2020-10-26 19:55:17,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:17,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909888854] [2020-10-26 19:55:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:22,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:22,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 19:55:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:23,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:23,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:23,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 19 proven. 209 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 19:55:23,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909888854] [2020-10-26 19:55:23,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:23,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:55:23,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977900499] [2020-10-26 19:55:23,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:55:23,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:55:23,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:55:23,114 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 20 states. [2020-10-26 19:55:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:26,539 INFO L93 Difference]: Finished difference Result 169 states and 187 transitions. [2020-10-26 19:55:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:55:26,540 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2020-10-26 19:55:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:26,543 INFO L225 Difference]: With dead ends: 169 [2020-10-26 19:55:26,543 INFO L226 Difference]: Without dead ends: 152 [2020-10-26 19:55:26,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=351, Invalid=2841, Unknown=0, NotChecked=0, Total=3192 [2020-10-26 19:55:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-26 19:55:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 106. [2020-10-26 19:55:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:55:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2020-10-26 19:55:26,568 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 113 [2020-10-26 19:55:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:26,568 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2020-10-26 19:55:26,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:55:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2020-10-26 19:55:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 19:55:26,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:26,570 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:26,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:55:26,570 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash -208228102, now seen corresponding path program 11 times [2020-10-26 19:55:26,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:26,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812175131] [2020-10-26 19:55:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 19:55:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:32,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 23 proven. 235 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 19:55:32,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812175131] [2020-10-26 19:55:32,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:32,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:55:32,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69905564] [2020-10-26 19:55:32,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:55:32,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:32,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:55:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:55:32,260 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 20 states. [2020-10-26 19:55:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:35,691 INFO L93 Difference]: Finished difference Result 187 states and 206 transitions. [2020-10-26 19:55:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:55:35,692 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-10-26 19:55:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:35,694 INFO L225 Difference]: With dead ends: 187 [2020-10-26 19:55:35,695 INFO L226 Difference]: Without dead ends: 170 [2020-10-26 19:55:35,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=316, Invalid=2546, Unknown=0, NotChecked=0, Total=2862 [2020-10-26 19:55:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-26 19:55:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 111. [2020-10-26 19:55:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-26 19:55:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-10-26 19:55:35,720 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 122 [2020-10-26 19:55:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:35,720 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-10-26 19:55:35,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:55:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-10-26 19:55:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 19:55:35,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:35,722 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:35,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:55:35,722 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:35,722 INFO L82 PathProgramCache]: Analyzing trace with hash -287665430, now seen corresponding path program 12 times [2020-10-26 19:55:35,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:35,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106969550] [2020-10-26 19:55:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:55:40,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-26 19:55:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 19:55:40,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:55:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 19:55:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-26 19:55:41,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106969550] [2020-10-26 19:55:41,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:41,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:55:41,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769286455] [2020-10-26 19:55:41,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:55:41,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:41,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:55:41,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:55:41,444 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 19 states. [2020-10-26 19:55:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:44,572 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2020-10-26 19:55:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:55:44,574 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 131 [2020-10-26 19:55:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:44,577 INFO L225 Difference]: With dead ends: 210 [2020-10-26 19:55:44,577 INFO L226 Difference]: Without dead ends: 193 [2020-10-26 19:55:44,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=264, Invalid=2186, Unknown=0, NotChecked=0, Total=2450 [2020-10-26 19:55:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-26 19:55:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 116. [2020-10-26 19:55:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 19:55:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2020-10-26 19:55:44,603 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 131 [2020-10-26 19:55:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:44,603 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2020-10-26 19:55:44,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:55:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2020-10-26 19:55:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 19:55:44,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:44,605 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:44,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:55:44,606 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2143428870, now seen corresponding path program 13 times [2020-10-26 19:55:44,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:44,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770950571] [2020-10-26 19:55:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:49,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 19:55:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:50,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:50,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:50,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:50,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 18 proven. 310 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-26 19:55:50,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770950571] [2020-10-26 19:55:50,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:50,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:55:50,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503664285] [2020-10-26 19:55:50,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:55:50,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:55:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:55:50,205 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand 21 states. [2020-10-26 19:55:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:52,700 INFO L93 Difference]: Finished difference Result 207 states and 238 transitions. [2020-10-26 19:55:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:55:52,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 140 [2020-10-26 19:55:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:52,707 INFO L225 Difference]: With dead ends: 207 [2020-10-26 19:55:52,708 INFO L226 Difference]: Without dead ends: 204 [2020-10-26 19:55:52,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=251, Invalid=2199, Unknown=0, NotChecked=0, Total=2450 [2020-10-26 19:55:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-26 19:55:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2020-10-26 19:55:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-26 19:55:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2020-10-26 19:55:52,753 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 140 [2020-10-26 19:55:52,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:52,753 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2020-10-26 19:55:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:55:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2020-10-26 19:55:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-26 19:55:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:52,756 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:52,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:55:52,756 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1809974932, now seen corresponding path program 14 times [2020-10-26 19:55:52,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:52,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540136727] [2020-10-26 19:55:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1862 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 19:55:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 275 proven. 90 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-26 19:55:55,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540136727] [2020-10-26 19:55:55,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:55,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:55:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058025714] [2020-10-26 19:55:55,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:55:55,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:55:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:55:55,719 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand 19 states. [2020-10-26 19:55:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:56,796 INFO L93 Difference]: Finished difference Result 234 states and 262 transitions. [2020-10-26 19:55:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:55:56,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-10-26 19:55:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:56,799 INFO L225 Difference]: With dead ends: 234 [2020-10-26 19:55:56,799 INFO L226 Difference]: Without dead ends: 151 [2020-10-26 19:55:56,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=681, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:55:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-26 19:55:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 134. [2020-10-26 19:55:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-26 19:55:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 148 transitions. [2020-10-26 19:55:56,830 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 148 transitions. Word has length 149 [2020-10-26 19:55:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:56,830 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 148 transitions. [2020-10-26 19:55:56,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:55:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 148 transitions. [2020-10-26 19:55:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-26 19:55:56,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:56,832 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 10, 10, 10, 9, 9, 9, 9, 9, 8, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:56,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:55:56,833 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1071050225, now seen corresponding path program 15 times [2020-10-26 19:55:56,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:56,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573085745] [2020-10-26 19:55:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:56:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 19:56:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:03,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 20 proven. 526 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-26 19:56:03,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573085745] [2020-10-26 19:56:03,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:03,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-26 19:56:03,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536688796] [2020-10-26 19:56:03,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-26 19:56:03,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:03,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-26 19:56:03,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=738, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:56:03,228 INFO L87 Difference]: Start difference. First operand 134 states and 148 transitions. Second operand 29 states. [2020-10-26 19:56:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:08,788 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2020-10-26 19:56:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-26 19:56:08,789 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 158 [2020-10-26 19:56:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:08,791 INFO L225 Difference]: With dead ends: 157 [2020-10-26 19:56:08,791 INFO L226 Difference]: Without dead ends: 154 [2020-10-26 19:56:08,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=773, Invalid=4777, Unknown=0, NotChecked=0, Total=5550 [2020-10-26 19:56:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-26 19:56:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 144. [2020-10-26 19:56:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-26 19:56:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2020-10-26 19:56:08,838 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 158 [2020-10-26 19:56:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:08,841 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2020-10-26 19:56:08,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-26 19:56:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2020-10-26 19:56:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 19:56:08,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:08,845 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 11, 11, 11, 10, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:08,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:56:08,847 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 129028181, now seen corresponding path program 16 times [2020-10-26 19:56:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:08,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030061022] [2020-10-26 19:56:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 19:56:13,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:15,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 30 proven. 547 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-26 19:56:15,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030061022] [2020-10-26 19:56:15,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:15,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:56:15,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315053784] [2020-10-26 19:56:15,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:56:15,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:56:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:56:15,273 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand 26 states. [2020-10-26 19:56:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:21,480 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-10-26 19:56:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-26 19:56:21,481 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 167 [2020-10-26 19:56:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:21,484 INFO L225 Difference]: With dead ends: 210 [2020-10-26 19:56:21,484 INFO L226 Difference]: Without dead ends: 193 [2020-10-26 19:56:21,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=512, Invalid=5650, Unknown=0, NotChecked=0, Total=6162 [2020-10-26 19:56:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-26 19:56:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-26 19:56:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-26 19:56:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 166 transitions. [2020-10-26 19:56:21,525 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 166 transitions. Word has length 167 [2020-10-26 19:56:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:21,526 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 166 transitions. [2020-10-26 19:56:21,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:56:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2020-10-26 19:56:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-26 19:56:21,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:21,528 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 12, 12, 11, 11, 11, 11, 11, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:21,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:56:21,529 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1831958033, now seen corresponding path program 17 times [2020-10-26 19:56:21,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:21,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218688548] [2020-10-26 19:56:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-26 19:56:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:27,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:27,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:56:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:27,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 34 proven. 596 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 19:56:27,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218688548] [2020-10-26 19:56:27,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:27,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:56:27,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269634188] [2020-10-26 19:56:27,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:56:27,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:56:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:56:27,755 INFO L87 Difference]: Start difference. First operand 149 states and 166 transitions. Second operand 26 states. [2020-10-26 19:56:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:33,829 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2020-10-26 19:56:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-26 19:56:33,830 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2020-10-26 19:56:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:33,833 INFO L225 Difference]: With dead ends: 218 [2020-10-26 19:56:33,833 INFO L226 Difference]: Without dead ends: 201 [2020-10-26 19:56:33,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=456, Invalid=5244, Unknown=0, NotChecked=0, Total=5700 [2020-10-26 19:56:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-26 19:56:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 154. [2020-10-26 19:56:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-26 19:56:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2020-10-26 19:56:33,876 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 176 [2020-10-26 19:56:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:33,876 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2020-10-26 19:56:33,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:56:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2020-10-26 19:56:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 19:56:33,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:33,878 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:33,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:56:33,878 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:33,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1061092757, now seen corresponding path program 18 times [2020-10-26 19:56:33,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:33,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149967625] [2020-10-26 19:56:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:56:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 19:56:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:40,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:56:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:56:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 38 proven. 647 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2020-10-26 19:56:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149967625] [2020-10-26 19:56:40,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:40,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:56:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43682493] [2020-10-26 19:56:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:56:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:40,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:56:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:56:40,102 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand 26 states. [2020-10-26 19:56:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:46,039 INFO L93 Difference]: Finished difference Result 236 states and 262 transitions. [2020-10-26 19:56:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-26 19:56:46,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2020-10-26 19:56:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:46,043 INFO L225 Difference]: With dead ends: 236 [2020-10-26 19:56:46,043 INFO L226 Difference]: Without dead ends: 219 [2020-10-26 19:56:46,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=423, Invalid=4979, Unknown=0, NotChecked=0, Total=5402 [2020-10-26 19:56:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-26 19:56:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 159. [2020-10-26 19:56:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-26 19:56:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-10-26 19:56:46,082 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 185 [2020-10-26 19:56:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:46,083 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-10-26 19:56:46,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:56:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-10-26 19:56:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 19:56:46,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:46,085 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 12, 11, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:46,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:56:46,085 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:46,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash -163625809, now seen corresponding path program 19 times [2020-10-26 19:56:46,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:46,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612122227] [2020-10-26 19:56:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-26 19:56:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:56:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:52,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:56:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:56:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:52,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:52,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 39 proven. 703 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2020-10-26 19:56:52,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612122227] [2020-10-26 19:56:52,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:52,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:56:52,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822647678] [2020-10-26 19:56:52,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:56:52,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:52,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:56:52,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:56:52,259 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 25 states. [2020-10-26 19:56:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:57,771 INFO L93 Difference]: Finished difference Result 259 states and 288 transitions. [2020-10-26 19:56:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:56:57,773 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 194 [2020-10-26 19:56:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:57,775 INFO L225 Difference]: With dead ends: 259 [2020-10-26 19:56:57,775 INFO L226 Difference]: Without dead ends: 242 [2020-10-26 19:56:57,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=361, Invalid=4195, Unknown=0, NotChecked=0, Total=4556 [2020-10-26 19:56:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-26 19:56:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 164. [2020-10-26 19:56:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-26 19:56:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 184 transitions. [2020-10-26 19:56:57,822 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 184 transitions. Word has length 194 [2020-10-26 19:56:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:57,823 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 184 transitions. [2020-10-26 19:56:57,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:56:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 184 transitions. [2020-10-26 19:56:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 19:56:57,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:57,824 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 12, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:57,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:56:57,825 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1293179605, now seen corresponding path program 20 times [2020-10-26 19:56:57,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:57,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482881875] [2020-10-26 19:56:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-26 19:57:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-26 19:57:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 19:57:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:57:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-26 19:57:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:57:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:57:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:57:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:57:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:57:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:57:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:57:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:57:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:57:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:57:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:57:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:57:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:57:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-26 19:57:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:03,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:03,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 28 proven. 777 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-26 19:57:03,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482881875] [2020-10-26 19:57:03,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:03,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:57:03,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700073544] [2020-10-26 19:57:03,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:57:03,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:03,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:57:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:57:03,950 INFO L87 Difference]: Start difference. First operand 164 states and 184 transitions. Second operand 27 states. [2020-10-26 19:57:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:08,516 INFO L93 Difference]: Finished difference Result 283 states and 328 transitions. [2020-10-26 19:57:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-26 19:57:08,518 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 203 [2020-10-26 19:57:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:08,520 INFO L225 Difference]: With dead ends: 283 [2020-10-26 19:57:08,520 INFO L226 Difference]: Without dead ends: 280 [2020-10-26 19:57:08,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=348, Invalid=3812, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 19:57:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-26 19:57:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 262. [2020-10-26 19:57:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-26 19:57:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 303 transitions. [2020-10-26 19:57:08,593 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 303 transitions. Word has length 203 [2020-10-26 19:57:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:08,594 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 303 transitions. [2020-10-26 19:57:08,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 19:57:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 303 transitions. [2020-10-26 19:57:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 19:57:08,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:08,596 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 12, 12, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:08,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:57:08,596 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:08,597 INFO L82 PathProgramCache]: Analyzing trace with hash 473277425, now seen corresponding path program 21 times [2020-10-26 19:57:08,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:08,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846716781] [2020-10-26 19:57:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3525 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-26 19:57:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:13,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:13,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:57:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:57:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:57:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:57:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:57:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:57:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:57:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:57:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:57:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:57:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:57:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:57:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:57:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-26 19:57:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-26 19:57:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 600 proven. 267 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-26 19:57:13,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846716781] [2020-10-26 19:57:13,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:13,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:57:13,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480647908] [2020-10-26 19:57:13,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:57:13,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:13,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:57:13,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:57:13,327 INFO L87 Difference]: Start difference. First operand 262 states and 303 transitions. Second operand 25 states. [2020-10-26 19:57:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:15,573 INFO L93 Difference]: Finished difference Result 312 states and 353 transitions. [2020-10-26 19:57:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 19:57:15,574 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 212 [2020-10-26 19:57:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:15,576 INFO L225 Difference]: With dead ends: 312 [2020-10-26 19:57:15,576 INFO L226 Difference]: Without dead ends: 199 [2020-10-26 19:57:15,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=532, Invalid=1820, Unknown=0, NotChecked=0, Total=2352 [2020-10-26 19:57:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-26 19:57:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 182. [2020-10-26 19:57:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-26 19:57:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2020-10-26 19:57:15,637 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 212 [2020-10-26 19:57:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:15,637 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2020-10-26 19:57:15,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:57:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2020-10-26 19:57:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 19:57:15,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:15,639 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 16, 15, 15, 15, 14, 14, 14, 14, 14, 12, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:15,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:57:15,640 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1009535230, now seen corresponding path program 22 times [2020-10-26 19:57:15,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:15,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856691853] [2020-10-26 19:57:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-26 19:57:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:57:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:57:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:57:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:57:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:57:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:57:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:57:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:22,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:57:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:57:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:57:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:57:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-26 19:57:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-26 19:57:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-26 19:57:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 35 proven. 1069 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2020-10-26 19:57:22,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856691853] [2020-10-26 19:57:22,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:22,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-26 19:57:22,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220674796] [2020-10-26 19:57:22,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-26 19:57:22,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:22,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-26 19:57:22,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:57:22,618 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand 33 states.