/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/array-fpi/condn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:53:27,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:53:27,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:53:27,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:53:27,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:53:27,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:53:27,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:53:27,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:53:27,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:53:27,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:53:27,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:53:27,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:53:27,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:53:27,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:53:27,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:53:27,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:53:27,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:53:27,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:53:27,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:53:27,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:53:27,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:53:27,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:53:27,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:53:27,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:53:27,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:53:27,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:53:27,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:53:27,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:53:27,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:53:27,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:53:27,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:53:27,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:53:27,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:53:27,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:53:27,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:53:27,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:53:27,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:53:27,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:53:27,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:53:27,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:53:27,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:53:27,227 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 03:53:27,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:53:27,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:53:27,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:53:27,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:53:27,267 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:53:27,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:53:27,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:53:27,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:53:27,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:53:27,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:53:27,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:53:27,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:53:27,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:53:27,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:53:27,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:53:27,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:53:27,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:53:27,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:53:27,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:53:27,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:53:27,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:53:27,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:53:27,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:53:27,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:53:27,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:53:27,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:53:27,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:53:27,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:53:27,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:53:27,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:53:27,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:53:27,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:53:27,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:53:27,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:53:27,767 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:53:27,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condn.c [2020-10-29 03:53:27,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424a5f547/32b4c6ae223b4a389503670e2f98a6b9/FLAG26baf0533 [2020-10-29 03:53:28,557 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:53:28,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condn.c [2020-10-29 03:53:28,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424a5f547/32b4c6ae223b4a389503670e2f98a6b9/FLAG26baf0533 [2020-10-29 03:53:28,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424a5f547/32b4c6ae223b4a389503670e2f98a6b9 [2020-10-29 03:53:28,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:53:28,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:53:28,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:28,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:53:28,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:53:28,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:28" (1/1) ... [2020-10-29 03:53:28,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:28, skipping insertion in model container [2020-10-29 03:53:28,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:28" (1/1) ... [2020-10-29 03:53:28,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:53:28,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:53:29,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:29,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:53:29,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:29,190 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:53:29,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29 WrapperNode [2020-10-29 03:53:29,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:29,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:53:29,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:53:29,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:53:29,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (1/1) ... [2020-10-29 03:53:29,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:53:29,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:53:29,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:53:29,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:53:29,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (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 03:53:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:53:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:53:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:53:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:53:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:53:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:53:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:53:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:53:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:53:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:53:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:53:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:53:29,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:53:29,610 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:53:29,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:29 BoogieIcfgContainer [2020-10-29 03:53:29,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:53:29,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:53:29,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:53:29,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:53:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:53:28" (1/3) ... [2020-10-29 03:53:29,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3dc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:29, skipping insertion in model container [2020-10-29 03:53:29,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:29" (2/3) ... [2020-10-29 03:53:29,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3dc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:29, skipping insertion in model container [2020-10-29 03:53:29,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:29" (3/3) ... [2020-10-29 03:53:29,656 INFO L111 eAbstractionObserver]: Analyzing ICFG condn.c [2020-10-29 03:53:29,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:53:29,674 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:53:29,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:53:29,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:53:29,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:53:29,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:53:29,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:53:29,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:53:29,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:53:29,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:53:29,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:53:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 03:53:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:53:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:29,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:29,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:29,765 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-10-29 03:53:29,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:29,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179484096] [2020-10-29 03:53:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:30,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:53:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:53:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-29 03:53:30,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:30,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:53:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:53:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:53:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:53:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:30,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:53:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:30,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:30,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:30,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:30,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:30,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:53:30,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:30,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:30,978 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 03:53:30,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179484096] [2020-10-29 03:53:30,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:53:30,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:53:30,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124299841] [2020-10-29 03:53:30,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:53:30,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:53:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:53:31,010 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 03:53:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:31,289 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2020-10-29 03:53:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:53:31,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 03:53:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:31,300 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:53:31,300 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:53:31,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:53:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:53:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-29 03:53:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:53:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-29 03:53:31,357 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-29 03:53:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:31,358 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-29 03:53:31,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:53:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-29 03:53:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:53:31,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:31,359 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] [2020-10-29 03:53:31,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:53:31,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-10-29 03:53:31,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:31,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578364174] [2020-10-29 03:53:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:53:32,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-29 03:53:32,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:32,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:53:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:53:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:53:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:32,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:53:32,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:32,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:32,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:32,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:32,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:32,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:32,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:53:32,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578364174] [2020-10-29 03:53:32,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:32,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:53:32,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469752989] [2020-10-29 03:53:32,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:53:32,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:32,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:53:32,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:53:32,275 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 10 states. [2020-10-29 03:53:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:32,673 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-29 03:53:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:53:32,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:53:32,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:32,675 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:53:32,676 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:53:32,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:53:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2020-10-29 03:53:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:53:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:53:32,690 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-10-29 03:53:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:32,690 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:53:32,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:53:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:53:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:53:32,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:32,692 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] [2020-10-29 03:53:32,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:53:32,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash 100561509, now seen corresponding path program 1 times [2020-10-29 03:53:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:32,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483706379] [2020-10-29 03:53:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:53:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-29 03:53:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:33,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:53:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:53:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:53:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:33,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:33,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:33,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:33,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:33,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:33,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:33,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:53:33,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483706379] [2020-10-29 03:53:33,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:33,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:53:33,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160888545] [2020-10-29 03:53:33,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:53:33,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:33,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:53:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:53:33,239 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 9 states. [2020-10-29 03:53:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:33,660 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:53:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:53:33,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:53:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:33,665 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:53:33,665 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:53:33,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:53:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-10-29 03:53:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:53:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-29 03:53:33,692 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 28 [2020-10-29 03:53:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:33,695 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-29 03:53:33,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:53:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-29 03:53:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:53:33,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:33,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:33,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:53:33,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1667586818, now seen corresponding path program 1 times [2020-10-29 03:53:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:33,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332997899] [2020-10-29 03:53:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:36,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:36,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:53:36,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2594 [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:53:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:53:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:36,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:36,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:36,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:36,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:53:36,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332997899] [2020-10-29 03:53:36,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:36,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:53:36,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807487905] [2020-10-29 03:53:36,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:53:36,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:53:36,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:36,487 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-10-29 03:53:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:36,944 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:53:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:53:36,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 03:53:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:36,946 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:53:36,946 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:53:36,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:53:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:53:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2020-10-29 03:53:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:53:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-29 03:53:36,957 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 31 [2020-10-29 03:53:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:36,957 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-29 03:53:36,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:53:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-29 03:53:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:53:36,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:36,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:36,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:53:36,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash -590551791, now seen corresponding path program 1 times [2020-10-29 03:53:36,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:36,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016282001] [2020-10-29 03:53:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:53:37,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 03:53:37,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:53:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:53:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:53:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:53:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:53:37,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016282001] [2020-10-29 03:53:37,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:37,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:53:37,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135922088] [2020-10-29 03:53:37,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:53:37,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:37,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:53:37,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:53:37,631 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 8 states. [2020-10-29 03:53:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:37,859 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2020-10-29 03:53:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:53:37,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-29 03:53:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:37,860 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:53:37,860 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:53:37,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:53:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-10-29 03:53:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:53:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 03:53:37,870 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 36 [2020-10-29 03:53:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:37,870 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 03:53:37,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:53:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 03:53:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:53:37,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:37,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:37,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:53:37,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:37,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2146708784, now seen corresponding path program 2 times [2020-10-29 03:53:37,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:37,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058878527] [2020-10-29 03:53:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:38,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:53:38,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:38,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-29 03:53:38,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:38,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:53:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:53:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:53:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:39,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:53:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:39,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:53:39,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058878527] [2020-10-29 03:53:39,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:39,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:53:39,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847263004] [2020-10-29 03:53:39,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:53:39,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:39,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:53:39,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:53:39,162 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 12 states. [2020-10-29 03:53:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:39,658 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-29 03:53:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:53:39,660 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-29 03:53:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:39,661 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:53:39,662 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:53:39,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:53:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:53:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2020-10-29 03:53:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:53:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-29 03:53:39,674 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 41 [2020-10-29 03:53:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:39,675 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-29 03:53:39,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:53:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-29 03:53:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:53:39,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:39,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:39,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:53:39,678 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash 154113806, now seen corresponding path program 1 times [2020-10-29 03:53:39,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:39,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599465673] [2020-10-29 03:53:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:53:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:53:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:53:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:41,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:41,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:41,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:41,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:53:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:41,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:41,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:53:41,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599465673] [2020-10-29 03:53:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:41,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:53:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985121581] [2020-10-29 03:53:41,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:53:41,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:53:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:41,127 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 11 states. [2020-10-29 03:53:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:41,745 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-29 03:53:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:53:41,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-29 03:53:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:41,746 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:53:41,747 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:53:41,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:53:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:53:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62. [2020-10-29 03:53:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:53:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-29 03:53:41,774 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 41 [2020-10-29 03:53:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:41,774 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-29 03:53:41,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:53:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-29 03:53:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:53:41,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:41,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:41,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:53:41,779 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 133982925, now seen corresponding path program 2 times [2020-10-29 03:53:41,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:41,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663414048] [2020-10-29 03:53:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:53:45,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:53:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:45,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:45,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:45,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:53:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:45,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:53:45,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:53:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663414048] [2020-10-29 03:53:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:45,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:53:45,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383843824] [2020-10-29 03:53:45,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:53:45,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:53:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:53:45,294 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 13 states. [2020-10-29 03:53:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:45,957 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-29 03:53:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:53:45,957 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-29 03:53:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:45,959 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:53:45,959 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:53:45,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:53:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:53:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2020-10-29 03:53:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:53:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 03:53:45,971 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 44 [2020-10-29 03:53:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:45,971 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 03:53:45,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:53:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 03:53:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:53:45,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:45,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:45,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:53:45,973 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:45,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:45,973 INFO L82 PathProgramCache]: Analyzing trace with hash 624455354, now seen corresponding path program 3 times [2020-10-29 03:53:45,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:45,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060670628] [2020-10-29 03:53:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:53:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:53:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:53:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:47,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:47,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:53:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:53:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:47,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:47,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:53:47,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060670628] [2020-10-29 03:53:47,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:47,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:53:47,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352127375] [2020-10-29 03:53:47,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:53:47,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:53:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:53:47,264 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 10 states. [2020-10-29 03:53:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:47,568 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-29 03:53:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:53:47,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-29 03:53:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:47,569 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:53:47,570 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:53:47,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:53:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-29 03:53:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:53:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-10-29 03:53:47,597 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 49 [2020-10-29 03:53:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:47,600 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-10-29 03:53:47,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:53:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-10-29 03:53:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:53:47,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:47,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:47,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:53:47,602 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1195956073, now seen corresponding path program 4 times [2020-10-29 03:53:47,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:47,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801581949] [2020-10-29 03:53:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:53:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-10-29 03:53:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:53:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:53:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:53:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:53:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:53:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:53:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801581949] [2020-10-29 03:53:50,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:50,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:53:50,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090449931] [2020-10-29 03:53:50,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:53:50,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:50,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:53:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:50,288 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 14 states. [2020-10-29 03:53:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:50,988 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-10-29 03:53:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:53:50,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 03:53:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:50,990 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:53:50,990 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:53:50,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:53:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:53:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2020-10-29 03:53:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:53:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-29 03:53:51,004 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 54 [2020-10-29 03:53:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:51,005 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-29 03:53:51,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:53:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-29 03:53:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:53:51,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:51,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:51,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:53:51,007 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1133916459, now seen corresponding path program 3 times [2020-10-29 03:53:51,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:51,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072417125] [2020-10-29 03:53:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:53,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:53:53,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:53:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:53:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:53,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:53,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:53,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:53,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:53,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:53:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:53,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:53:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:53:53,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072417125] [2020-10-29 03:53:53,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:53,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:53:53,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943494835] [2020-10-29 03:53:53,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:53:53,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:53:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:53:53,592 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-29 03:53:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:54,335 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-29 03:53:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:53:54,336 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-29 03:53:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:54,337 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:53:54,337 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:53:54,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:53:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:53:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 79. [2020-10-29 03:53:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:53:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-29 03:53:54,355 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 54 [2020-10-29 03:53:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:54,356 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-29 03:53:54,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:53:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-29 03:53:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:53:54,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:54,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:54,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:53:54,357 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash -897395014, now seen corresponding path program 4 times [2020-10-29 03:53:54,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:54,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398061483] [2020-10-29 03:53:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:53:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:53:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:53:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:59,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:53:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:59,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:59,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:53:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:53:59,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398061483] [2020-10-29 03:53:59,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:59,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:53:59,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328507667] [2020-10-29 03:53:59,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:53:59,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:53:59,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:53:59,678 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 15 states. [2020-10-29 03:54:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:00,791 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-29 03:54:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:54:00,793 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-29 03:54:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:00,794 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:54:00,794 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:54:00,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:54:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:54:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 65. [2020-10-29 03:54:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:54:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-29 03:54:00,816 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 57 [2020-10-29 03:54:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:00,817 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-29 03:54:00,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:54:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-29 03:54:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:54:00,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:00,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:00,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:54:00,822 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:00,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2096172417, now seen corresponding path program 5 times [2020-10-29 03:54:00,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:00,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870694255] [2020-10-29 03:54:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:54:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-10-29 03:54:02,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:54:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:54:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:54:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:54:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:54:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:54:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:54:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870694255] [2020-10-29 03:54:02,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:02,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:54:02,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104180334] [2020-10-29 03:54:02,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:54:02,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:54:02,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:54:02,576 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 12 states. [2020-10-29 03:54:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:03,012 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-10-29 03:54:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:54:03,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-29 03:54:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:03,014 INFO L225 Difference]: With dead ends: 153 [2020-10-29 03:54:03,015 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:54:03,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:54:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-10-29 03:54:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:54:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-29 03:54:03,030 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 62 [2020-10-29 03:54:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:03,030 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-29 03:54:03,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:54:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-29 03:54:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:54:03,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:03,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:03,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:54:03,032 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1620308984, now seen corresponding path program 6 times [2020-10-29 03:54:03,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:03,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233065160] [2020-10-29 03:54:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:54:05,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-10-29 03:54:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:54:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:54:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:54:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:05,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:54:05,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:54:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:54:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:54:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:05,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:05,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:54:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:54:05,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233065160] [2020-10-29 03:54:05,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:05,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:05,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554456308] [2020-10-29 03:54:05,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:05,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:05,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:05,861 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 16 states. [2020-10-29 03:54:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:06,870 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-10-29 03:54:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:54:06,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-29 03:54:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:06,872 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:54:06,872 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:54:06,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:54:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:54:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-10-29 03:54:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:54:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-10-29 03:54:06,893 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 67 [2020-10-29 03:54:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:06,894 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-10-29 03:54:06,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-10-29 03:54:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:54:06,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:06,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:06,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:54:06,901 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:06,902 INFO L82 PathProgramCache]: Analyzing trace with hash 430675014, now seen corresponding path program 5 times [2020-10-29 03:54:06,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:06,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729062287] [2020-10-29 03:54:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:06,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:54:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3404 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:54:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:10,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:54:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:54:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:54:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:10,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:54:10,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729062287] [2020-10-29 03:54:10,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:10,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:54:10,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405276487] [2020-10-29 03:54:10,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:54:10,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:10,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:54:10,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:54:10,564 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 15 states. [2020-10-29 03:54:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:11,584 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-29 03:54:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:54:11,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-29 03:54:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:11,586 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:54:11,586 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:54:11,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:54:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:54:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-10-29 03:54:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:54:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-10-29 03:54:11,610 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 67 [2020-10-29 03:54:11,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:11,611 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-10-29 03:54:11,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:54:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-10-29 03:54:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:54:11,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:11,612 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:11,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:54:11,612 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash -477919043, now seen corresponding path program 6 times [2020-10-29 03:54:11,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:11,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51145655] [2020-10-29 03:54:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:15,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:54:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:54:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4310 [2020-10-29 03:54:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:15,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:54:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:16,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:16,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:16,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:16,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:16,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:54:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:16,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:54:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:16,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:54:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:54:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:16,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:16,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:54:16,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51145655] [2020-10-29 03:54:16,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:16,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:54:16,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755588583] [2020-10-29 03:54:16,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:54:16,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:16,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:54:16,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:16,364 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 17 states. [2020-10-29 03:54:17,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:17,893 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-29 03:54:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:54:17,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-29 03:54:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:17,897 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:54:17,897 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:54:17,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:54:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:54:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2020-10-29 03:54:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:54:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-10-29 03:54:17,919 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 70 [2020-10-29 03:54:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:17,919 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-10-29 03:54:17,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:54:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-10-29 03:54:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:54:17,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:17,920 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:17,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:54:17,921 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1874333710, now seen corresponding path program 7 times [2020-10-29 03:54:17,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:17,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661554563] [2020-10-29 03:54:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:54:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:54:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:54:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:54:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:54:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:54:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-29 03:54:20,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661554563] [2020-10-29 03:54:20,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:20,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:54:20,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567883431] [2020-10-29 03:54:20,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:54:20,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:20,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:54:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:54:20,268 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 14 states. [2020-10-29 03:54:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:20,748 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-10-29 03:54:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:54:20,749 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-29 03:54:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:20,750 INFO L225 Difference]: With dead ends: 185 [2020-10-29 03:54:20,750 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:54:20,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:54:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:54:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-29 03:54:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:54:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-10-29 03:54:20,764 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 75 [2020-10-29 03:54:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:20,765 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-10-29 03:54:20,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:54:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-10-29 03:54:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:54:20,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:20,766 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:20,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:54:20,766 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 759253255, now seen corresponding path program 8 times [2020-10-29 03:54:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:20,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397671019] [2020-10-29 03:54:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:54:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3574 [2020-10-29 03:54:24,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:54:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:54:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:54:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:24,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:54:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:54:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:54:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:54:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:54:24,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397671019] [2020-10-29 03:54:24,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:24,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:54:24,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885812085] [2020-10-29 03:54:24,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:54:24,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:54:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:54:24,737 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 18 states. [2020-10-29 03:54:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:26,005 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2020-10-29 03:54:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:54:26,005 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-29 03:54:26,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:26,007 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:54:26,007 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:54:26,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:54:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:54:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2020-10-29 03:54:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:54:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-10-29 03:54:26,023 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 80 [2020-10-29 03:54:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:26,024 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-10-29 03:54:26,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:54:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-10-29 03:54:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:54:26,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:26,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:26,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:54:26,026 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399749, now seen corresponding path program 7 times [2020-10-29 03:54:26,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:26,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479515999] [2020-10-29 03:54:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:54:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:54:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:54:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:54:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:54:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:54:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:54:31,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479515999] [2020-10-29 03:54:31,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:31,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:54:31,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95878317] [2020-10-29 03:54:31,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:54:31,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:54:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:31,380 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 17 states. [2020-10-29 03:54:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:32,795 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-29 03:54:32,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:54:32,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-29 03:54:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:32,797 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:54:32,797 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:54:32,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:54:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:54:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 113. [2020-10-29 03:54:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:54:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2020-10-29 03:54:32,815 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 80 [2020-10-29 03:54:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:32,815 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2020-10-29 03:54:32,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:54:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2020-10-29 03:54:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:54:32,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:32,817 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:32,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:54:32,817 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash 74152562, now seen corresponding path program 8 times [2020-10-29 03:54:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051815304] [2020-10-29 03:54:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:54:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:54:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:54:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:54:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:54:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:54:38,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051815304] [2020-10-29 03:54:38,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:38,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:54:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580859709] [2020-10-29 03:54:38,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:54:38,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:54:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:54:38,340 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 19 states. [2020-10-29 03:54:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:40,189 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-29 03:54:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:54:40,190 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-29 03:54:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:40,193 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:54:40,193 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:54:40,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:54:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:54:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 91. [2020-10-29 03:54:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:54:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-29 03:54:40,207 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 83 [2020-10-29 03:54:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:40,207 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-29 03:54:40,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:54:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-29 03:54:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:54:40,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:40,208 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:40,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:54:40,209 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:40,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:40,209 INFO L82 PathProgramCache]: Analyzing trace with hash 860601841, now seen corresponding path program 9 times [2020-10-29 03:54:40,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:40,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924815931] [2020-10-29 03:54:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4628 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 03:54:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:54:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:54:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:54:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:54:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:54:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:45,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:54:45,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924815931] [2020-10-29 03:54:45,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:45,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:45,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354265887] [2020-10-29 03:54:45,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:45,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:45,057 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 16 states. [2020-10-29 03:54:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:45,710 INFO L93 Difference]: Finished difference Result 217 states and 237 transitions. [2020-10-29 03:54:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:54:45,711 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-29 03:54:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:45,713 INFO L225 Difference]: With dead ends: 217 [2020-10-29 03:54:45,714 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 03:54:45,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:54:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 03:54:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-10-29 03:54:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:54:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-10-29 03:54:45,733 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 88 [2020-10-29 03:54:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:45,734 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-10-29 03:54:45,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-10-29 03:54:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 03:54:45,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:45,735 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:45,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:54:45,735 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:45,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:45,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2141549248, now seen corresponding path program 10 times [2020-10-29 03:54:45,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:45,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889290701] [2020-10-29 03:54:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:50,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:54:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:54:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:54:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:54:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:51,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:54:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:54:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:51,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:54:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:54:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:54:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:51,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 03:54:51,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889290701] [2020-10-29 03:54:51,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:51,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:54:51,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684151695] [2020-10-29 03:54:51,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:54:51,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:51,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:54:51,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:54:51,183 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 20 states. [2020-10-29 03:54:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:52,740 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2020-10-29 03:54:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:54:52,743 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-29 03:54:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:52,745 INFO L225 Difference]: With dead ends: 145 [2020-10-29 03:54:52,745 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:54:52,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:54:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:54:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2020-10-29 03:54:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:54:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-29 03:54:52,765 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 93 [2020-10-29 03:54:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:52,766 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-29 03:54:52,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:54:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-29 03:54:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 03:54:52,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:52,768 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:52,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:54:52,768 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1672337790, now seen corresponding path program 9 times [2020-10-29 03:54:52,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:52,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208342708] [2020-10-29 03:54:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:57,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:54:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:54:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:54:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:54:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:54:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 03:54:58,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208342708] [2020-10-29 03:54:58,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:58,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:54:58,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452926641] [2020-10-29 03:54:58,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:54:58,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:58,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:54:58,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:54:58,200 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 19 states. [2020-10-29 03:54:59,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:59,906 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2020-10-29 03:54:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:54:59,907 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-29 03:54:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:59,908 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:54:59,908 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 03:54:59,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:54:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 03:54:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 130. [2020-10-29 03:54:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:54:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2020-10-29 03:54:59,930 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 93 [2020-10-29 03:54:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:59,930 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2020-10-29 03:54:59,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:54:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2020-10-29 03:54:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:54:59,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:59,932 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:54:59,932 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:59,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1598157139, now seen corresponding path program 10 times [2020-10-29 03:54:59,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:59,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494841953] [2020-10-29 03:54:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:55:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:05,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:05,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:55:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:55:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 03:55:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:55:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:55:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:55:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 03:55:05,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494841953] [2020-10-29 03:55:05,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:05,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:55:05,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780293312] [2020-10-29 03:55:05,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:55:05,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:55:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:55:05,488 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 21 states. [2020-10-29 03:55:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:07,799 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2020-10-29 03:55:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:55:07,799 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-10-29 03:55:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:07,801 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:55:07,801 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 03:55:07,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:55:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 03:55:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 104. [2020-10-29 03:55:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:55:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-10-29 03:55:07,817 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 96 [2020-10-29 03:55:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:07,817 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-10-29 03:55:07,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:55:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-10-29 03:55:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:55:07,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:07,818 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:07,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:55:07,818 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1910654678, now seen corresponding path program 11 times [2020-10-29 03:55:07,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:07,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588657875] [2020-10-29 03:55:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:55:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:55:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:55:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:55:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:13,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:55:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:55:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 03:55:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:13,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:13,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 84 proven. 51 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-29 03:55:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588657875] [2020-10-29 03:55:13,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:13,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:55:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440602128] [2020-10-29 03:55:13,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:55:13,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:13,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:55:13,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:55:13,086 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 18 states. [2020-10-29 03:55:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:13,847 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2020-10-29 03:55:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:55:13,848 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 101 [2020-10-29 03:55:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:13,850 INFO L225 Difference]: With dead ends: 249 [2020-10-29 03:55:13,850 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:55:13,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:55:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:55:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-10-29 03:55:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:55:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2020-10-29 03:55:13,862 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 101 [2020-10-29 03:55:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:13,862 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2020-10-29 03:55:13,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:55:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2020-10-29 03:55:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:55:13,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:13,863 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:13,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:55:13,864 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:13,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:13,864 INFO L82 PathProgramCache]: Analyzing trace with hash -279989897, now seen corresponding path program 12 times [2020-10-29 03:55:13,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:13,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167935347] [2020-10-29 03:55:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:18,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:18,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:55:18,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:55:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:55:18,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:18,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:55:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:55:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:55:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:55:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:55:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:55:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:55:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:55:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:55:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 03:55:19,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167935347] [2020-10-29 03:55:19,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:19,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:55:19,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137725730] [2020-10-29 03:55:19,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:55:19,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:19,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:55:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:55:19,366 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 22 states. [2020-10-29 03:55:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:21,339 INFO L93 Difference]: Finished difference Result 162 states and 182 transitions. [2020-10-29 03:55:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:55:21,340 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 106 [2020-10-29 03:55:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:21,342 INFO L225 Difference]: With dead ends: 162 [2020-10-29 03:55:21,343 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 03:55:21,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:55:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 03:55:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2020-10-29 03:55:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:55:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2020-10-29 03:55:21,364 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 106 [2020-10-29 03:55:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:21,365 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2020-10-29 03:55:21,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:55:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2020-10-29 03:55:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:55:21,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:21,366 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:21,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:55:21,367 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash 153739189, now seen corresponding path program 11 times [2020-10-29 03:55:21,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:21,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33328300] [2020-10-29 03:55:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:55:26,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:55:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:55:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:55:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:55:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:55:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:55:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:55:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 03:55:26,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33328300] [2020-10-29 03:55:26,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:26,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:55:26,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493518698] [2020-10-29 03:55:26,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:55:26,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:26,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:55:26,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:55:26,851 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand 21 states. [2020-10-29 03:55:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:29,142 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2020-10-29 03:55:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:55:29,143 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-29 03:55:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:29,145 INFO L225 Difference]: With dead ends: 204 [2020-10-29 03:55:29,146 INFO L226 Difference]: Without dead ends: 201 [2020-10-29 03:55:29,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:55:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-29 03:55:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 147. [2020-10-29 03:55:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:55:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2020-10-29 03:55:29,176 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 106 [2020-10-29 03:55:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:29,178 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2020-10-29 03:55:29,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:55:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2020-10-29 03:55:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:55:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:29,180 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:29,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:55:29,180 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash -291404246, now seen corresponding path program 12 times [2020-10-29 03:55:29,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:29,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917706928] [2020-10-29 03:55:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:55:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:55:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:55:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:55:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 03:55:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 03:55:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 72 proven. 83 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-29 03:55:34,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917706928] [2020-10-29 03:55:34,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:34,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:55:34,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411925260] [2020-10-29 03:55:34,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:55:34,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:34,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:55:34,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:55:34,748 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand 25 states. [2020-10-29 03:55:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:37,600 INFO L93 Difference]: Finished difference Result 342 states and 395 transitions. [2020-10-29 03:55:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:55:37,601 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 109 [2020-10-29 03:55:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:37,603 INFO L225 Difference]: With dead ends: 342 [2020-10-29 03:55:37,603 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 03:55:37,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=644, Invalid=3262, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:55:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 03:55:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 153. [2020-10-29 03:55:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 03:55:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2020-10-29 03:55:37,627 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 109 [2020-10-29 03:55:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:37,627 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2020-10-29 03:55:37,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:55:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2020-10-29 03:55:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:55:37,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:37,628 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:37,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:55:37,628 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:37,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:37,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2045363916, now seen corresponding path program 13 times [2020-10-29 03:55:37,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:37,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731202017] [2020-10-29 03:55:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:55:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:55:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 03:55:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:55:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:55:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:55:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:55:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:43,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:55:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:55:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:55:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 164 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-29 03:55:43,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731202017] [2020-10-29 03:55:43,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:43,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:55:43,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979470489] [2020-10-29 03:55:43,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:55:43,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:43,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:55:43,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:55:43,408 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand 23 states. [2020-10-29 03:55:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:46,403 INFO L93 Difference]: Finished difference Result 207 states and 235 transitions. [2020-10-29 03:55:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:55:46,404 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 111 [2020-10-29 03:55:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:46,406 INFO L225 Difference]: With dead ends: 207 [2020-10-29 03:55:46,407 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 03:55:46,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=2159, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:55:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 03:55:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 122. [2020-10-29 03:55:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:55:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-10-29 03:55:46,427 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 111 [2020-10-29 03:55:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:46,427 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-10-29 03:55:46,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:55:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-10-29 03:55:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:55:46,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:46,428 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:46,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:55:46,429 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash 108107384, now seen corresponding path program 13 times [2020-10-29 03:55:46,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:46,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532729757] [2020-10-29 03:55:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 03:55:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:55:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:55:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:55:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:55:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:55:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:55:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:55:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:52,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-29 03:55:52,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532729757] [2020-10-29 03:55:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:55:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518215476] [2020-10-29 03:55:52,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:55:52,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:55:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:55:52,166 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 24 states. [2020-10-29 03:55:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:54,739 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2020-10-29 03:55:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:55:54,740 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2020-10-29 03:55:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:54,742 INFO L225 Difference]: With dead ends: 179 [2020-10-29 03:55:54,742 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 03:55:54,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:55:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 03:55:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 160. [2020-10-29 03:55:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 03:55:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2020-10-29 03:55:54,770 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 119 [2020-10-29 03:55:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:54,771 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2020-10-29 03:55:54,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:55:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2020-10-29 03:55:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:55:54,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:54,772 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:54,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:55:54,772 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:54,773 INFO L82 PathProgramCache]: Analyzing trace with hash -623860042, now seen corresponding path program 14 times [2020-10-29 03:55:54,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:54,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130841777] [2020-10-29 03:55:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:55:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:55:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 03:55:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:56:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:56:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:56:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:56:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:56:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:56:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:56:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:56:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-29 03:56:00,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130841777] [2020-10-29 03:56:00,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:00,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:56:00,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210276303] [2020-10-29 03:56:00,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:56:00,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:56:00,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:56:00,368 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand 23 states. [2020-10-29 03:56:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:03,216 INFO L93 Difference]: Finished difference Result 226 states and 257 transitions. [2020-10-29 03:56:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:56:03,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 119 [2020-10-29 03:56:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:03,219 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:56:03,219 INFO L226 Difference]: Without dead ends: 223 [2020-10-29 03:56:03,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:56:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-29 03:56:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 164. [2020-10-29 03:56:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-29 03:56:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2020-10-29 03:56:03,249 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 119 [2020-10-29 03:56:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:03,250 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2020-10-29 03:56:03,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:56:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2020-10-29 03:56:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:56:03,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:03,251 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:03,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:56:03,252 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 394902685, now seen corresponding path program 15 times [2020-10-29 03:56:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:03,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159854004] [2020-10-29 03:56:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:56:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:56:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:56:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:56:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:56:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:56:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 03:56:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 03:56:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 14 proven. 215 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-29 03:56:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159854004] [2020-10-29 03:56:08,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:08,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:56:08,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717380545] [2020-10-29 03:56:08,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:56:08,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:08,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:56:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:56:08,933 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand 25 states. [2020-10-29 03:56:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:12,511 INFO L93 Difference]: Finished difference Result 226 states and 257 transitions. [2020-10-29 03:56:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:56:12,512 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-10-29 03:56:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:12,514 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:56:12,514 INFO L226 Difference]: Without dead ends: 223 [2020-10-29 03:56:12,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:56:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-29 03:56:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 130. [2020-10-29 03:56:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:56:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2020-10-29 03:56:12,544 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 122 [2020-10-29 03:56:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:12,544 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2020-10-29 03:56:12,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:56:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2020-10-29 03:56:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:56:12,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:12,545 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:12,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:56:12,545 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:12,546 INFO L82 PathProgramCache]: Analyzing trace with hash -468448670, now seen corresponding path program 14 times [2020-10-29 03:56:12,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:12,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817786984] [2020-10-29 03:56:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:56:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:56:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:56:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:17,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:56:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:56:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:56:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:56:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:56:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:56:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:56:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 03:56:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 144 proven. 92 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-29 03:56:17,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817786984] [2020-10-29 03:56:17,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:17,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:56:17,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853261151] [2020-10-29 03:56:17,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:56:17,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:56:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:56:17,923 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 22 states. [2020-10-29 03:56:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:18,973 INFO L93 Difference]: Finished difference Result 313 states and 339 transitions. [2020-10-29 03:56:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:56:18,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 127 [2020-10-29 03:56:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:18,976 INFO L225 Difference]: With dead ends: 313 [2020-10-29 03:56:18,976 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:56:18,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:56:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:56:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 135. [2020-10-29 03:56:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:56:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-29 03:56:18,994 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 127 [2020-10-29 03:56:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:18,994 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-29 03:56:18,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:56:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-29 03:56:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:56:18,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:18,995 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:18,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:56:18,995 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:18,996 INFO L82 PathProgramCache]: Analyzing trace with hash 531112423, now seen corresponding path program 15 times [2020-10-29 03:56:18,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:18,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642790523] [2020-10-29 03:56:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:56:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:56:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 03:56:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:56:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:56:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:56:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:56:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:56:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:56:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:56:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:56:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-29 03:56:24,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642790523] [2020-10-29 03:56:24,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:24,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:56:24,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696548392] [2020-10-29 03:56:24,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:56:24,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:56:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:56:24,740 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 26 states. [2020-10-29 03:56:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:27,631 INFO L93 Difference]: Finished difference Result 196 states and 220 transitions. [2020-10-29 03:56:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:56:27,632 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 132 [2020-10-29 03:56:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:27,634 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:56:27,634 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 03:56:27,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:56:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 03:56:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2020-10-29 03:56:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-29 03:56:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-10-29 03:56:27,667 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 132 [2020-10-29 03:56:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:27,668 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-10-29 03:56:27,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:56:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-10-29 03:56:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:56:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:27,669 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:27,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:56:27,669 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1418335269, now seen corresponding path program 16 times [2020-10-29 03:56:27,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:27,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761166570] [2020-10-29 03:56:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:32,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 03:56:32,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:56:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:56:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:56:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:56:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:56:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:56:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:56:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:56:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:56:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:33,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-29 03:56:33,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761166570] [2020-10-29 03:56:33,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:33,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:56:33,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792843297] [2020-10-29 03:56:33,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:56:33,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:33,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:56:33,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:56:33,375 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 25 states. [2020-10-29 03:56:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:36,778 INFO L93 Difference]: Finished difference Result 248 states and 282 transitions. [2020-10-29 03:56:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:56:36,779 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 132 [2020-10-29 03:56:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:36,781 INFO L225 Difference]: With dead ends: 248 [2020-10-29 03:56:36,781 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 03:56:36,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:56:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 03:56:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 181. [2020-10-29 03:56:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-29 03:56:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2020-10-29 03:56:36,815 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 132 [2020-10-29 03:56:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:36,816 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2020-10-29 03:56:36,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:56:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2020-10-29 03:56:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 03:56:36,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:36,818 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:36,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:56:36,818 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash 707213794, now seen corresponding path program 17 times [2020-10-29 03:56:36,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:36,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253890726] [2020-10-29 03:56:36,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:41,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:41,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 03:56:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:56:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:56:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:56:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:56:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:56:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 03:56:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 03:56:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 03:56:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 16 proven. 273 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-29 03:56:42,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253890726] [2020-10-29 03:56:42,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:42,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:56:42,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23551016] [2020-10-29 03:56:42,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:56:42,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:56:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:56:42,693 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 27 states. [2020-10-29 03:56:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:47,025 INFO L93 Difference]: Finished difference Result 248 states and 282 transitions. [2020-10-29 03:56:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:56:47,026 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 135 [2020-10-29 03:56:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:47,028 INFO L225 Difference]: With dead ends: 248 [2020-10-29 03:56:47,028 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 03:56:47,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=233, Invalid=3189, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:56:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 03:56:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 143. [2020-10-29 03:56:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:56:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2020-10-29 03:56:47,055 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 135 [2020-10-29 03:56:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:47,056 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2020-10-29 03:56:47,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:56:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2020-10-29 03:56:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 03:56:47,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:47,057 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:56:47,057 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash -650397999, now seen corresponding path program 16 times [2020-10-29 03:56:47,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92083750] [2020-10-29 03:56:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:56:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:56:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 03:56:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:56:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:56:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:56:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:56:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:56:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:56:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:56:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:56:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:56:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:52,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 180 proven. 117 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-29 03:56:52,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92083750] [2020-10-29 03:56:52,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:52,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:56:52,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006395086] [2020-10-29 03:56:52,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:56:52,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:52,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:56:52,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:56:52,521 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand 24 states. [2020-10-29 03:56:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:53,724 INFO L93 Difference]: Finished difference Result 345 states and 373 transitions. [2020-10-29 03:56:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:56:53,725 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 140 [2020-10-29 03:56:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:53,726 INFO L225 Difference]: With dead ends: 345 [2020-10-29 03:56:53,726 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:56:53,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:56:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:56:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 148. [2020-10-29 03:56:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-29 03:56:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2020-10-29 03:56:53,750 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 140 [2020-10-29 03:56:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:53,751 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2020-10-29 03:56:53,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:56:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2020-10-29 03:56:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 03:56:53,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:53,752 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:53,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:56:53,752 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash 449537968, now seen corresponding path program 17 times [2020-10-29 03:56:53,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:53,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366498802] [2020-10-29 03:56:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:58,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 03:56:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:56:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:56:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:56:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 03:56:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:56:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:56:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 03:56:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 03:56:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 03:56:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:56:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:56:59,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-29 03:56:59,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366498802] [2020-10-29 03:56:59,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:59,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:56:59,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942401467] [2020-10-29 03:56:59,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:56:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:56:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:56:59,656 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand 28 states. [2020-10-29 03:57:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:03,339 INFO L93 Difference]: Finished difference Result 213 states and 239 transitions. [2020-10-29 03:57:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:57:03,340 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 145 [2020-10-29 03:57:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:03,345 INFO L225 Difference]: With dead ends: 213 [2020-10-29 03:57:03,345 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 03:57:03,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:57:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 03:57:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 194. [2020-10-29 03:57:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 03:57:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2020-10-29 03:57:03,378 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 145 [2020-10-29 03:57:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:03,378 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2020-10-29 03:57:03,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:57:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2020-10-29 03:57:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 03:57:03,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:03,380 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:03,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:57:03,380 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:03,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:03,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2016295918, now seen corresponding path program 18 times [2020-10-29 03:57:03,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:03,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61937455] [2020-10-29 03:57:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:08,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 03:57:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:57:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 03:57:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:57:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:57:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:57:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 03:57:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:57:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:57:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 03:57:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 03:57:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 03:57:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:09,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:09,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-29 03:57:09,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61937455] [2020-10-29 03:57:09,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:09,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:57:09,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594337361] [2020-10-29 03:57:09,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:57:09,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:09,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:57:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:57:09,186 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand 27 states. [2020-10-29 03:57:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:13,171 INFO L93 Difference]: Finished difference Result 270 states and 307 transitions. [2020-10-29 03:57:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:57:13,172 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 145 [2020-10-29 03:57:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:13,173 INFO L225 Difference]: With dead ends: 270 [2020-10-29 03:57:13,174 INFO L226 Difference]: Without dead ends: 267 [2020-10-29 03:57:13,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:57:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-29 03:57:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 198. [2020-10-29 03:57:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 03:57:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2020-10-29 03:57:13,212 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 145 [2020-10-29 03:57:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:13,213 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2020-10-29 03:57:13,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:57:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2020-10-29 03:57:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:57:13,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:13,214 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:13,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:57:13,214 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash -364621171, now seen corresponding path program 19 times [2020-10-29 03:57:13,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:13,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234871085] [2020-10-29 03:57:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking...