/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:20:20,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:20:20,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:20:21,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:20:21,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:20:21,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:20:21,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:20:21,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:20:21,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:20:21,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:20:21,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:20:21,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:20:21,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:20:21,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:20:21,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:20:21,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:20:21,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:20:21,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:20:21,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:20:21,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:20:21,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:20:21,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:20:21,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:20:21,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:20:21,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:20:21,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:20:21,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:20:21,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:20:21,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:20:21,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:20:21,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:20:21,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:20:21,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:20:21,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:20:21,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:20:21,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:20:21,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:20:21,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:20:21,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:20:21,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:20:21,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:20:21,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:20:21,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:20:21,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:20:21,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:20:21,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:20:21,226 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:20:21,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:20:21,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:20:21,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:20:21,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:20:21,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:20:21,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:20:21,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:20:21,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:20:21,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:20:21,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:20:21,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:20:21,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:20:21,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:20:21,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:20:21,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:20:21,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:20:21,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:20:21,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:20:21,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:20:21,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:20:21,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:20:21,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:20:21,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:20:21,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:20:21,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:20:21,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:20:21,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:20:21,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:20:21,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:20:21,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:20:21,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:20:21,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110692648/05c3322e8ebc4309bfe6b4cd7bb065ca/FLAGd08f9bd22 [2020-10-29 12:20:22,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:20:22,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:20:22,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110692648/05c3322e8ebc4309bfe6b4cd7bb065ca/FLAGd08f9bd22 [2020-10-29 12:20:22,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110692648/05c3322e8ebc4309bfe6b4cd7bb065ca [2020-10-29 12:20:22,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:20:22,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:20:22,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:20:22,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:20:22,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:20:22,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:20:22" (1/1) ... [2020-10-29 12:20:22,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2822bfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:22, skipping insertion in model container [2020-10-29 12:20:22,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:20:22" (1/1) ... [2020-10-29 12:20:22,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:20:22,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:20:23,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:20:23,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:20:23,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:20:23,232 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:20:23,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23 WrapperNode [2020-10-29 12:20:23,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:20:23,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:20:23,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:20:23,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:20:23,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... [2020-10-29 12:20:23,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:20:23,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:20:23,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:20:23,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:20:23,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:20:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:20:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:20:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:20:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:20:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:20:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:20:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:20:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:20:23,427 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:20:23,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:20:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:20:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:20:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:20:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:20:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:20:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:20:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:20:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:20:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:20:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:20:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:20:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:20:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:20:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:20:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:20:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:20:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:20:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:20:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:20:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:20:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:20:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:20:24,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:20:24,375 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:20:24,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:20:24 BoogieIcfgContainer [2020-10-29 12:20:24,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:20:24,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:20:24,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:20:24,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:20:24,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:20:22" (1/3) ... [2020-10-29 12:20:24,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:20:24, skipping insertion in model container [2020-10-29 12:20:24,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:20:23" (2/3) ... [2020-10-29 12:20:24,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:20:24, skipping insertion in model container [2020-10-29 12:20:24,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:20:24" (3/3) ... [2020-10-29 12:20:24,387 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:20:24,399 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:20:24,405 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:20:24,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:20:24,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:20:24,451 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:20:24,451 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:20:24,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:20:24,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:20:24,452 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:20:24,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:20:24,452 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:20:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-29 12:20:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:20:24,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:24,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:24,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2013799790, now seen corresponding path program 1 times [2020-10-29 12:20:24,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:24,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771001886] [2020-10-29 12:20:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:20:25,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-29 12:20:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:20:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:20:25,697 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:25,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:20:25,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:20:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:20:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:20:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:20:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:20:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:20:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:20:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:25,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:20:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:26,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:26,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:20:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:26,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:26,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:26,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:26,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:26,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771001886] [2020-10-29 12:20:26,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:26,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:20:26,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248692557] [2020-10-29 12:20:26,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:20:26,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:26,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:20:26,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:20:26,068 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 6 states. [2020-10-29 12:20:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:27,234 INFO L93 Difference]: Finished difference Result 262 states and 417 transitions. [2020-10-29 12:20:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:20:27,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 12:20:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:27,250 INFO L225 Difference]: With dead ends: 262 [2020-10-29 12:20:27,250 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 12:20:27,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 12:20:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-29 12:20:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 12:20:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 247 transitions. [2020-10-29 12:20:27,322 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 247 transitions. Word has length 63 [2020-10-29 12:20:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:27,322 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 247 transitions. [2020-10-29 12:20:27,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:20:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 247 transitions. [2020-10-29 12:20:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:20:27,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:27,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:27,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:20:27,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:27,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800720, now seen corresponding path program 1 times [2020-10-29 12:20:27,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:27,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970395010] [2020-10-29 12:20:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:20:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-29 12:20:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:20:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:20:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:28,437 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:28,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:20:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:20:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:20:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:20:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:28,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:20:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:28,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:20:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:28,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:20:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:28,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:28,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:20:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:28,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:28,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:28,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:28,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:28,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:28,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970395010] [2020-10-29 12:20:28,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:28,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:20:28,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719414438] [2020-10-29 12:20:28,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:20:28,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:20:28,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:20:28,826 INFO L87 Difference]: Start difference. First operand 154 states and 247 transitions. Second operand 12 states. [2020-10-29 12:20:29,507 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:29,863 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:20:30,299 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:30,650 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:32,563 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-29 12:20:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:20:32,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-29 12:20:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:32,567 INFO L225 Difference]: With dead ends: 257 [2020-10-29 12:20:32,568 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 12:20:32,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 12:20:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-29 12:20:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 12:20:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 220 transitions. [2020-10-29 12:20:32,622 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 220 transitions. Word has length 63 [2020-10-29 12:20:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:32,623 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 220 transitions. [2020-10-29 12:20:32,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:20:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 220 transitions. [2020-10-29 12:20:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:20:32,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:32,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:32,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:20:32,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash -454625351, now seen corresponding path program 1 times [2020-10-29 12:20:32,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:32,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584288020] [2020-10-29 12:20:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:20:37,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:20:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:20:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:20:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:38,078 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:38,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:20:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:20:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:20:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:20:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:20:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:20:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:38,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:38,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584288020] [2020-10-29 12:20:38,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:38,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:38,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499833072] [2020-10-29 12:20:38,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:38,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:38,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:38,393 INFO L87 Difference]: Start difference. First operand 154 states and 220 transitions. Second operand 9 states. [2020-10-29 12:20:38,676 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:41,025 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:20:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:41,248 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2020-10-29 12:20:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:20:41,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:20:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:41,256 INFO L225 Difference]: With dead ends: 346 [2020-10-29 12:20:41,256 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 12:20:41,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 12:20:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 231. [2020-10-29 12:20:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 12:20:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 340 transitions. [2020-10-29 12:20:41,298 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 340 transitions. Word has length 89 [2020-10-29 12:20:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:41,299 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 340 transitions. [2020-10-29 12:20:41,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 340 transitions. [2020-10-29 12:20:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:20:41,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:41,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:41,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:20:41,304 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1407509110, now seen corresponding path program 1 times [2020-10-29 12:20:41,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:41,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403864687] [2020-10-29 12:20:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:46,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 12:20:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:46,695 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:46,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:46,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:46,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:20:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:46,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:46,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:46,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:46,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:20:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:46,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:20:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:20:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:20:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:47,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:47,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403864687] [2020-10-29 12:20:47,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:47,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534922284] [2020-10-29 12:20:47,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:47,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:47,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:47,110 INFO L87 Difference]: Start difference. First operand 231 states and 340 transitions. Second operand 9 states. [2020-10-29 12:20:47,407 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:47,700 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:20:48,080 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:20:48,835 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-29 12:20:49,584 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:52,707 INFO L93 Difference]: Finished difference Result 823 states and 1212 transitions. [2020-10-29 12:20:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:52,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:20:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:52,713 INFO L225 Difference]: With dead ends: 823 [2020-10-29 12:20:52,713 INFO L226 Difference]: Without dead ends: 619 [2020-10-29 12:20:52,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:20:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-29 12:20:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 566. [2020-10-29 12:20:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-29 12:20:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 824 transitions. [2020-10-29 12:20:52,794 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 824 transitions. Word has length 91 [2020-10-29 12:20:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:52,795 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 824 transitions. [2020-10-29 12:20:52,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 824 transitions. [2020-10-29 12:20:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:20:52,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:52,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:52,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:20:52,802 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:52,802 INFO L82 PathProgramCache]: Analyzing trace with hash 863643604, now seen corresponding path program 1 times [2020-10-29 12:20:52,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:52,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617787986] [2020-10-29 12:20:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:57,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:57,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 12:20:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,126 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:58,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:58,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:20:58,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:20:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:20:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:20:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:20:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:20:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:58,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:58,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:20:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:58,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:58,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617787986] [2020-10-29 12:20:58,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:58,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:58,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751278852] [2020-10-29 12:20:58,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:58,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:58,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:58,553 INFO L87 Difference]: Start difference. First operand 566 states and 824 transitions. Second operand 9 states. [2020-10-29 12:20:58,852 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:59,176 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:20:59,822 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-29 12:21:00,147 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:21:01,352 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:04,154 INFO L93 Difference]: Finished difference Result 1971 states and 2906 transitions. [2020-10-29 12:21:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:21:04,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:21:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:04,166 INFO L225 Difference]: With dead ends: 1971 [2020-10-29 12:21:04,166 INFO L226 Difference]: Without dead ends: 1441 [2020-10-29 12:21:04,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:21:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-10-29 12:21:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1336. [2020-10-29 12:21:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-29 12:21:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1947 transitions. [2020-10-29 12:21:04,315 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1947 transitions. Word has length 91 [2020-10-29 12:21:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:04,315 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1947 transitions. [2020-10-29 12:21:04,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1947 transitions. [2020-10-29 12:21:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:21:04,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:04,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:21:04,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:21:04,321 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:04,321 INFO L82 PathProgramCache]: Analyzing trace with hash 900576455, now seen corresponding path program 1 times [2020-10-29 12:21:04,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:04,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871326407] [2020-10-29 12:21:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:04,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:09,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:21:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:09,754 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:21:09,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:09,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:21:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:21:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:09,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:09,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:21:09,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:09,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:09,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:21:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:10,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:21:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:21:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:21:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:21:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:21:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:10,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:10,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:21:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:10,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871326407] [2020-10-29 12:21:10,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:10,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:10,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326329118] [2020-10-29 12:21:10,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:10,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:10,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:10,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:10,230 INFO L87 Difference]: Start difference. First operand 1336 states and 1947 transitions. Second operand 9 states. [2020-10-29 12:21:10,534 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:10,867 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:21:11,194 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:21:12,061 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:21:12,765 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:15,955 INFO L93 Difference]: Finished difference Result 4690 states and 6799 transitions. [2020-10-29 12:21:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:21:15,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:21:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:15,981 INFO L225 Difference]: With dead ends: 4690 [2020-10-29 12:21:15,982 INFO L226 Difference]: Without dead ends: 3458 [2020-10-29 12:21:16,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:21:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2020-10-29 12:21:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3327. [2020-10-29 12:21:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3327 states. [2020-10-29 12:21:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4754 transitions. [2020-10-29 12:21:16,314 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4754 transitions. Word has length 92 [2020-10-29 12:21:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:16,315 INFO L481 AbstractCegarLoop]: Abstraction has 3327 states and 4754 transitions. [2020-10-29 12:21:16,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4754 transitions. [2020-10-29 12:21:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:21:16,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:16,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:21:16,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:21:16,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1998810905, now seen corresponding path program 1 times [2020-10-29 12:21:16,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:16,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975866538] [2020-10-29 12:21:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:21:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:21:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:21,745 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:21:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 12:21:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:21,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:21:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:21:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:21:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:21,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:21,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:21:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:22,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:22,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:21:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:22,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:21:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:21:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:21:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:22,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975866538] [2020-10-29 12:21:22,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:22,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:21:22,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822546481] [2020-10-29 12:21:22,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:21:22,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:21:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:21:22,165 INFO L87 Difference]: Start difference. First operand 3327 states and 4754 transitions. Second operand 10 states. [2020-10-29 12:21:22,478 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:22,918 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:23,222 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:21:23,576 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:23,941 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:21:24,249 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:21:24,621 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:21:24,961 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:21:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:29,800 INFO L93 Difference]: Finished difference Result 11242 states and 16316 transitions. [2020-10-29 12:21:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:21:29,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-29 12:21:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:29,844 INFO L225 Difference]: With dead ends: 11242 [2020-10-29 12:21:29,844 INFO L226 Difference]: Without dead ends: 7713 [2020-10-29 12:21:29,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:21:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7713 states. [2020-10-29 12:21:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7713 to 7415. [2020-10-29 12:21:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7415 states. [2020-10-29 12:21:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 10746 transitions. [2020-10-29 12:21:30,464 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 10746 transitions. Word has length 92 [2020-10-29 12:21:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:30,464 INFO L481 AbstractCegarLoop]: Abstraction has 7415 states and 10746 transitions. [2020-10-29 12:21:30,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:21:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 10746 transitions. [2020-10-29 12:21:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:21:30,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:30,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:21:30,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:21:30,482 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash 474568785, now seen corresponding path program 1 times [2020-10-29 12:21:30,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:30,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245926545] [2020-10-29 12:21:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:21:35,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:21:35,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:35,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:21:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:35,863 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:35,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:35,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:21:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:21:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:21:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:21:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:21:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:21:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:36,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:36,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:36,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:36,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245926545] [2020-10-29 12:21:36,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:36,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:36,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42203714] [2020-10-29 12:21:36,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:36,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:36,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:36,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:36,210 INFO L87 Difference]: Start difference. First operand 7415 states and 10746 transitions. Second operand 9 states. [2020-10-29 12:21:36,520 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:36,859 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:21:37,255 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:21:37,852 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:21:38,894 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:42,418 INFO L93 Difference]: Finished difference Result 9652 states and 13844 transitions. [2020-10-29 12:21:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:21:42,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-29 12:21:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:42,456 INFO L225 Difference]: With dead ends: 9652 [2020-10-29 12:21:42,457 INFO L226 Difference]: Without dead ends: 7157 [2020-10-29 12:21:42,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:21:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-10-29 12:21:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 6765. [2020-10-29 12:21:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-29 12:21:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 9626 transitions. [2020-10-29 12:21:43,037 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 9626 transitions. Word has length 93 [2020-10-29 12:21:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:43,037 INFO L481 AbstractCegarLoop]: Abstraction has 6765 states and 9626 transitions. [2020-10-29 12:21:43,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 9626 transitions. [2020-10-29 12:21:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:21:43,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:43,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:21:43,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:21:43,055 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:43,056 INFO L82 PathProgramCache]: Analyzing trace with hash 867226906, now seen corresponding path program 1 times [2020-10-29 12:21:43,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:43,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963207317] [2020-10-29 12:21:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:21:48,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:21:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:21:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 12:21:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:48,462 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:48,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:48,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:48,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:21:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:21:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:21:48,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:21:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:48,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:21:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:21:48,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:21:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:21:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:21:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:48,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:48,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:48,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:48,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963207317] [2020-10-29 12:21:48,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:48,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:48,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086293373] [2020-10-29 12:21:48,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:48,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:48,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:48,803 INFO L87 Difference]: Start difference. First operand 6765 states and 9626 transitions. Second operand 9 states. [2020-10-29 12:21:49,119 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:52,220 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:52,576 INFO L93 Difference]: Finished difference Result 13847 states and 20159 transitions. [2020-10-29 12:21:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:21:52,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-29 12:21:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:52,619 INFO L225 Difference]: With dead ends: 13847 [2020-10-29 12:21:52,620 INFO L226 Difference]: Without dead ends: 9636 [2020-10-29 12:21:52,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:21:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2020-10-29 12:21:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 9233. [2020-10-29 12:21:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9233 states. [2020-10-29 12:21:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9233 states to 9233 states and 13204 transitions. [2020-10-29 12:21:53,350 INFO L78 Accepts]: Start accepts. Automaton has 9233 states and 13204 transitions. Word has length 93 [2020-10-29 12:21:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:53,351 INFO L481 AbstractCegarLoop]: Abstraction has 9233 states and 13204 transitions. [2020-10-29 12:21:53,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9233 states and 13204 transitions. [2020-10-29 12:21:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 12:21:53,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:53,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:21:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:21:53,370 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1084466479, now seen corresponding path program 1 times [2020-10-29 12:21:53,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:53,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125615080] [2020-10-29 12:21:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 12:21:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,694 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:21:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:21:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:21:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:21:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:21:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:21:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:21:59,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:21:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:59,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:59,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125615080] [2020-10-29 12:21:59,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:59,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:21:59,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021385147] [2020-10-29 12:21:59,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:21:59,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:21:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:21:59,126 INFO L87 Difference]: Start difference. First operand 9233 states and 13204 transitions. Second operand 10 states. [2020-10-29 12:21:59,469 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:59,974 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:00,437 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:22:00,773 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:22:01,116 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:22:01,466 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:22:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:05,795 INFO L93 Difference]: Finished difference Result 19913 states and 28830 transitions. [2020-10-29 12:22:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:22:05,798 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-29 12:22:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:05,846 INFO L225 Difference]: With dead ends: 19913 [2020-10-29 12:22:05,846 INFO L226 Difference]: Without dead ends: 10992 [2020-10-29 12:22:05,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:22:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2020-10-29 12:22:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10782. [2020-10-29 12:22:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10782 states. [2020-10-29 12:22:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 15429 transitions. [2020-10-29 12:22:06,954 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 15429 transitions. Word has length 95 [2020-10-29 12:22:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:06,954 INFO L481 AbstractCegarLoop]: Abstraction has 10782 states and 15429 transitions. [2020-10-29 12:22:06,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:22:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 15429 transitions. [2020-10-29 12:22:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:22:06,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:06,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:22:06,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:22:06,974 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:06,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1212800719, now seen corresponding path program 1 times [2020-10-29 12:22:06,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:06,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633220214] [2020-10-29 12:22:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:07,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:22:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:22:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,311 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:22:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:22:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:22:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:22:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:22:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:22:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:22:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:12,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633220214] [2020-10-29 12:22:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899296495] [2020-10-29 12:22:12,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:12,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:12,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:12,627 INFO L87 Difference]: Start difference. First operand 10782 states and 15429 transitions. Second operand 9 states. [2020-10-29 12:22:12,942 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:13,287 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:22:13,642 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:22:14,520 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:22:15,412 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:20,110 INFO L93 Difference]: Finished difference Result 34528 states and 50339 transitions. [2020-10-29 12:22:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:22:20,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-29 12:22:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:20,227 INFO L225 Difference]: With dead ends: 34528 [2020-10-29 12:22:20,227 INFO L226 Difference]: Without dead ends: 25030 [2020-10-29 12:22:20,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:22:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25030 states. [2020-10-29 12:22:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25030 to 24691. [2020-10-29 12:22:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24691 states. [2020-10-29 12:22:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24691 states to 24691 states and 35269 transitions. [2020-10-29 12:22:22,282 INFO L78 Accepts]: Start accepts. Automaton has 24691 states and 35269 transitions. Word has length 96 [2020-10-29 12:22:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:22,282 INFO L481 AbstractCegarLoop]: Abstraction has 24691 states and 35269 transitions. [2020-10-29 12:22:22,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:22,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24691 states and 35269 transitions. [2020-10-29 12:22:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:22:22,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:22,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:22:22,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:22:22,330 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1504819981, now seen corresponding path program 1 times [2020-10-29 12:22:22,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:22,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189726656] [2020-10-29 12:22:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:22,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:22:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,656 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:22:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:22:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:22:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:22:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:22:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:22:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:22:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:22:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:22:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:22:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:27,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:22:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:22:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:27,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:27,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:27,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189726656] [2020-10-29 12:22:27,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:27,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:27,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332986157] [2020-10-29 12:22:27,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:27,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:27,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:27,995 INFO L87 Difference]: Start difference. First operand 24691 states and 35269 transitions. Second operand 9 states. [2020-10-29 12:22:28,305 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:28,633 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:22:29,151 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:22:29,877 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:22:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:33,977 INFO L93 Difference]: Finished difference Result 32031 states and 45681 transitions. [2020-10-29 12:22:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:22:33,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-29 12:22:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:34,063 INFO L225 Difference]: With dead ends: 32031 [2020-10-29 12:22:34,063 INFO L226 Difference]: Without dead ends: 25489 [2020-10-29 12:22:34,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:22:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25489 states. [2020-10-29 12:22:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25489 to 24858. [2020-10-29 12:22:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24858 states. [2020-10-29 12:22:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24858 states to 24858 states and 35242 transitions. [2020-10-29 12:22:35,986 INFO L78 Accepts]: Start accepts. Automaton has 24858 states and 35242 transitions. Word has length 96 [2020-10-29 12:22:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:35,987 INFO L481 AbstractCegarLoop]: Abstraction has 24858 states and 35242 transitions. [2020-10-29 12:22:35,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 24858 states and 35242 transitions. [2020-10-29 12:22:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:22:36,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:36,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:22:36,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:22:36,029 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1513566587, now seen corresponding path program 1 times [2020-10-29 12:22:36,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:36,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037910853] [2020-10-29 12:22:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:22:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:22:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:22:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,384 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:22:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:22:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:22:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:22:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:22:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:22:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:41,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:22:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:22:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:22:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:41,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:22:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:41,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037910853] [2020-10-29 12:22:41,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:41,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:22:41,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630955692] [2020-10-29 12:22:41,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:22:41,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:41,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:22:41,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:22:41,782 INFO L87 Difference]: Start difference. First operand 24858 states and 35242 transitions. Second operand 14 states. [2020-10-29 12:22:42,419 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:22:42,731 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:43,363 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:22:44,266 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:22:44,436 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:22:44,834 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:22:45,039 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:22:45,247 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-29 12:22:45,453 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:22:45,626 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:22:46,149 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:22:47,416 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:22:47,933 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:22:48,368 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:22:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:48,944 INFO L93 Difference]: Finished difference Result 36296 states and 51516 transitions. [2020-10-29 12:22:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:22:48,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 12:22:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:49,104 INFO L225 Difference]: With dead ends: 36296 [2020-10-29 12:22:49,105 INFO L226 Difference]: Without dead ends: 29316 [2020-10-29 12:22:49,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:22:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29316 states. [2020-10-29 12:22:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29316 to 27835. [2020-10-29 12:22:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27835 states. [2020-10-29 12:22:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27835 states to 27835 states and 39232 transitions. [2020-10-29 12:22:51,607 INFO L78 Accepts]: Start accepts. Automaton has 27835 states and 39232 transitions. Word has length 97 [2020-10-29 12:22:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:51,608 INFO L481 AbstractCegarLoop]: Abstraction has 27835 states and 39232 transitions. [2020-10-29 12:22:51,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:22:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 27835 states and 39232 transitions. [2020-10-29 12:22:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:22:51,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:51,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:22:51,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:22:51,644 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1536198841, now seen corresponding path program 1 times [2020-10-29 12:22:51,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:51,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141316942] [2020-10-29 12:22:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:22:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 12:22:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,001 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:22:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:22:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:22:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:22:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:22:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:22:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:22:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:22:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:57,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:22:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:22:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:57,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141316942] [2020-10-29 12:22:57,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:57,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:22:57,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849169934] [2020-10-29 12:22:57,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:22:57,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:22:57,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:22:57,374 INFO L87 Difference]: Start difference. First operand 27835 states and 39232 transitions. Second operand 14 states. [2020-10-29 12:22:58,005 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:22:58,308 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:58,988 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:22:59,892 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:23:00,073 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:00,514 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:00,993 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:23:01,190 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:23:01,381 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:23:01,617 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:23:03,065 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:03,570 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:04,019 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:23:04,379 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-29 12:23:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:04,780 INFO L93 Difference]: Finished difference Result 35881 states and 50766 transitions. [2020-10-29 12:23:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:23:04,781 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 12:23:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:04,893 INFO L225 Difference]: With dead ends: 35881 [2020-10-29 12:23:04,894 INFO L226 Difference]: Without dead ends: 30577 [2020-10-29 12:23:04,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:23:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30577 states. [2020-10-29 12:23:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30577 to 28756. [2020-10-29 12:23:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28756 states. [2020-10-29 12:23:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28756 states to 28756 states and 40372 transitions. [2020-10-29 12:23:07,060 INFO L78 Accepts]: Start accepts. Automaton has 28756 states and 40372 transitions. Word has length 97 [2020-10-29 12:23:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:07,060 INFO L481 AbstractCegarLoop]: Abstraction has 28756 states and 40372 transitions. [2020-10-29 12:23:07,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:23:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 28756 states and 40372 transitions. [2020-10-29 12:23:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:23:07,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:07,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:23:07,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:23:07,084 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash 718550391, now seen corresponding path program 1 times [2020-10-29 12:23:07,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:07,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22424014] [2020-10-29 12:23:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 12:23:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,449 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:23:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:23:12,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:23:12,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:23:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:23:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:23:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:23:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:12,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:12,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:23:12,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:23:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:23:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:23:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:23:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:12,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:12,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:12,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:12,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:23:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:12,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22424014] [2020-10-29 12:23:12,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:12,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:23:12,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726559118] [2020-10-29 12:23:12,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:23:12,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:12,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:23:12,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:23:12,813 INFO L87 Difference]: Start difference. First operand 28756 states and 40372 transitions. Second operand 14 states. [2020-10-29 12:23:13,199 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:23:13,544 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:23:14,178 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:14,811 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:23:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:18,987 INFO L93 Difference]: Finished difference Result 41403 states and 58691 transitions. [2020-10-29 12:23:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:23:18,988 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 12:23:18,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:19,118 INFO L225 Difference]: With dead ends: 41403 [2020-10-29 12:23:19,118 INFO L226 Difference]: Without dead ends: 31606 [2020-10-29 12:23:19,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:23:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31606 states. [2020-10-29 12:23:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31606 to 28760. [2020-10-29 12:23:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28760 states. [2020-10-29 12:23:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28760 states to 28760 states and 40250 transitions. [2020-10-29 12:23:21,466 INFO L78 Accepts]: Start accepts. Automaton has 28760 states and 40250 transitions. Word has length 97 [2020-10-29 12:23:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:21,467 INFO L481 AbstractCegarLoop]: Abstraction has 28760 states and 40250 transitions. [2020-10-29 12:23:21,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:23:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 28760 states and 40250 transitions. [2020-10-29 12:23:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:23:21,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:21,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:23:21,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:23:21,498 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash 209077301, now seen corresponding path program 1 times [2020-10-29 12:23:21,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:21,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232626930] [2020-10-29 12:23:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:23:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:23:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 12:23:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,857 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:23:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:23:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:23:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:23:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:23:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:27,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:23:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:27,134 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-29 12:23:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:23:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:23:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:23:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:23:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:23:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:23:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:23:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:27,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232626930] [2020-10-29 12:23:27,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:27,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:23:27,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789764712] [2020-10-29 12:23:27,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:23:27,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:27,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:23:27,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:23:27,309 INFO L87 Difference]: Start difference. First operand 28760 states and 40250 transitions. Second operand 14 states. [2020-10-29 12:23:27,982 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:23:28,305 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:23:28,979 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:29,913 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:23:30,094 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:30,497 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:23:30,989 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:23:31,276 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:23:31,511 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-29 12:23:32,818 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:33,340 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:23:33,816 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:23:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:23:34,345 INFO L93 Difference]: Finished difference Result 35774 states and 50415 transitions. [2020-10-29 12:23:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:23:34,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 12:23:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:23:34,491 INFO L225 Difference]: With dead ends: 35774 [2020-10-29 12:23:34,491 INFO L226 Difference]: Without dead ends: 29914 [2020-10-29 12:23:34,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:23:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29914 states. [2020-10-29 12:23:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29914 to 28786. [2020-10-29 12:23:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28786 states. [2020-10-29 12:23:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28786 states to 28786 states and 40203 transitions. [2020-10-29 12:23:37,077 INFO L78 Accepts]: Start accepts. Automaton has 28786 states and 40203 transitions. Word has length 97 [2020-10-29 12:23:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:23:37,077 INFO L481 AbstractCegarLoop]: Abstraction has 28786 states and 40203 transitions. [2020-10-29 12:23:37,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:23:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28786 states and 40203 transitions. [2020-10-29 12:23:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:23:37,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:23:37,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:23:37,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:23:37,101 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:23:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:23:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1785067405, now seen corresponding path program 1 times [2020-10-29 12:23:37,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:23:37,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164436147] [2020-10-29 12:23:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:23:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:23:42,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,429 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:23:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:23:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:23:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:23:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:23:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:23:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:23:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:23:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:23:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:23:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:23:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:23:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:23:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:23:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:23:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:23:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:23:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:23:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:23:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:23:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:23:42,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:23:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:23:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:23:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:23:42,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164436147] [2020-10-29 12:23:42,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:23:42,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:23:42,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227014315] [2020-10-29 12:23:42,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:23:42,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:23:42,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:23:42,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:23:42,796 INFO L87 Difference]: Start difference. First operand 28786 states and 40203 transitions. Second operand 13 states. [2020-10-29 12:23:43,157 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:23:43,856 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:23:44,177 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:23:44,970 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 12:23:47,548 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:23:47,872 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:23:48,732 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 178