/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/eca-rers2012/Problem17_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:22:22,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:22:22,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:22:22,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:22:22,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:22:22,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:22:22,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:22:22,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:22:22,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:22:22,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:22:22,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:22:22,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:22:22,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:22:22,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:22:22,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:22:22,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:22:22,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:22:22,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:22:22,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:22:22,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:22:22,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:22:22,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:22:22,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:22:22,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:22:22,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:22:22,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:22:22,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:22:22,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:22:22,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:22:22,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:22:22,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:22:22,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:22:22,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:22:22,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:22:22,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:22:22,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:22:22,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:22:22,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:22:22,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:22:22,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:22:22,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:22:22,390 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 08:22:22,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:22:22,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:22:22,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:22:22,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:22:22,460 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:22:22,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:22:22,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:22:22,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:22:22,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:22:22,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:22:22,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:22:22,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:22:22,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:22:22,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:22:22,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:22:22,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:22:22,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:22:22,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:22:22,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:22:22,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:22:22,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:22:22,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:22,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:22:22,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:22:22,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:22:22,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:22:22,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:22:22,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:22:22,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:22:22,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:22:22,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:22:22,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:22:22,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:22:22,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:22:22,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:22:22,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-29 08:22:23,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b78c1de29/4ef65e3209804881829513fe36e60076/FLAG611d7e4b7 [2020-10-29 08:22:24,217 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:22:24,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-29 08:22:24,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b78c1de29/4ef65e3209804881829513fe36e60076/FLAG611d7e4b7 [2020-10-29 08:22:24,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b78c1de29/4ef65e3209804881829513fe36e60076 [2020-10-29 08:22:24,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:22:24,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:22:24,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:24,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:22:24,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:22:24,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:24" (1/1) ... [2020-10-29 08:22:24,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:24, skipping insertion in model container [2020-10-29 08:22:24,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:24" (1/1) ... [2020-10-29 08:22:24,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:22:24,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:22:26,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:26,139 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:22:26,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:26,599 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:22:26,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26 WrapperNode [2020-10-29 08:22:26,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:26,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:22:26,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:22:26,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:22:26,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (1/1) ... [2020-10-29 08:22:26,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:22:26,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:22:26,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:22:26,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:22:26,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (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 08:22:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:22:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:22:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:22:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:22:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:22:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:22:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:22:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:22:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:22:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:22:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:22:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:22:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:22:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:22:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:22:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:22:36,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:22:36,416 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:22:36,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:36 BoogieIcfgContainer [2020-10-29 08:22:36,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:22:36,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:22:36,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:22:36,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:22:36,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:22:24" (1/3) ... [2020-10-29 08:22:36,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e31aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:36, skipping insertion in model container [2020-10-29 08:22:36,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:26" (2/3) ... [2020-10-29 08:22:36,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e31aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:36, skipping insertion in model container [2020-10-29 08:22:36,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:36" (3/3) ... [2020-10-29 08:22:36,435 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2020-10-29 08:22:36,449 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:22:36,456 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:22:36,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:22:36,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:22:36,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:22:36,506 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:22:36,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:22:36,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:22:36,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:22:36,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:22:36,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:22:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:22:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 08:22:36,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:36,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:36,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1566239661, now seen corresponding path program 1 times [2020-10-29 08:22:36,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:36,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879950459] [2020-10-29 08:22:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:37,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:37,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 08:22:37,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-29 08:22:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 08:22:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:22:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:37,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:22:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:37,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:37,706 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 08:22:37,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879950459] [2020-10-29 08:22:37,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:37,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:22:37,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278066769] [2020-10-29 08:22:37,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:22:37,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:22:37,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:22:37,750 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:22:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:50,089 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-29 08:22:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:50,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 08:22:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:50,124 INFO L225 Difference]: With dead ends: 1721 [2020-10-29 08:22:50,124 INFO L226 Difference]: Without dead ends: 1035 [2020-10-29 08:22:50,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-29 08:22:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-29 08:22:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-29 08:22:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-29 08:22:50,391 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 17 [2020-10-29 08:22:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:50,392 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-29 08:22:50,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:22:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-29 08:22:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 08:22:50,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:50,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:50,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:22:50,398 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:50,399 INFO L82 PathProgramCache]: Analyzing trace with hash 306424974, now seen corresponding path program 1 times [2020-10-29 08:22:50,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:50,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172003723] [2020-10-29 08:22:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:22:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-10-29 08:22:51,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:51,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:22:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:52,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:22:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:52,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:22:52,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 08:22:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:52,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:22:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:52,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172003723] [2020-10-29 08:22:52,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:52,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:22:52,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004816277] [2020-10-29 08:22:52,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:22:52,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:52,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:22:52,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:52,477 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-29 08:23:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:09,022 INFO L93 Difference]: Finished difference Result 3008 states and 5134 transitions. [2020-10-29 08:23:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:09,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-29 08:23:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:09,045 INFO L225 Difference]: With dead ends: 3008 [2020-10-29 08:23:09,046 INFO L226 Difference]: Without dead ends: 2005 [2020-10-29 08:23:09,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-10-29 08:23:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1952. [2020-10-29 08:23:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-29 08:23:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2892 transitions. [2020-10-29 08:23:09,140 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2892 transitions. Word has length 86 [2020-10-29 08:23:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:09,141 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2892 transitions. [2020-10-29 08:23:09,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2892 transitions. [2020-10-29 08:23:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 08:23:09,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:09,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:09,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:23:09,149 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:09,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:09,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1992778686, now seen corresponding path program 1 times [2020-10-29 08:23:09,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:09,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360658426] [2020-10-29 08:23:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:09,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:23:10,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 08:23:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:10,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:10,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:10,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:23:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:10,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:10,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 08:23:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 08:23:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:10,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 08:23:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:23:11,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360658426] [2020-10-29 08:23:11,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:23:11,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:23:11,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068793318] [2020-10-29 08:23:11,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:11,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:11,081 INFO L87 Difference]: Start difference. First operand 1952 states and 2892 transitions. Second operand 7 states. [2020-10-29 08:23:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:27,956 INFO L93 Difference]: Finished difference Result 5816 states and 8755 transitions. [2020-10-29 08:23:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:27,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-29 08:23:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:27,981 INFO L225 Difference]: With dead ends: 5816 [2020-10-29 08:23:27,982 INFO L226 Difference]: Without dead ends: 3870 [2020-10-29 08:23:27,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2020-10-29 08:23:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3332. [2020-10-29 08:23:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3332 states. [2020-10-29 08:23:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 4349 transitions. [2020-10-29 08:23:28,102 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 4349 transitions. Word has length 96 [2020-10-29 08:23:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:28,103 INFO L481 AbstractCegarLoop]: Abstraction has 3332 states and 4349 transitions. [2020-10-29 08:23:28,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 4349 transitions. [2020-10-29 08:23:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 08:23:28,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:28,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:28,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:23:28,109 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash 587797487, now seen corresponding path program 1 times [2020-10-29 08:23:28,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:28,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212691233] [2020-10-29 08:23:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:30,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:30,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:23:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:23:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:30,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:30,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:30,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:23:30,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:30,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:30,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:23:30,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:30,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:23:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 08:23:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:30,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:23:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:23:30,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212691233] [2020-10-29 08:23:30,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:30,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:23:30,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004971843] [2020-10-29 08:23:30,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:30,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:30,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:30,765 INFO L87 Difference]: Start difference. First operand 3332 states and 4349 transitions. Second operand 7 states. [2020-10-29 08:23:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:47,521 INFO L93 Difference]: Finished difference Result 8506 states and 11678 transitions. [2020-10-29 08:23:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:23:47,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-29 08:23:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:47,563 INFO L225 Difference]: With dead ends: 8506 [2020-10-29 08:23:47,563 INFO L226 Difference]: Without dead ends: 5180 [2020-10-29 08:23:47,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:47,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2020-10-29 08:23:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 5149. [2020-10-29 08:23:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-10-29 08:23:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 6763 transitions. [2020-10-29 08:23:47,746 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 6763 transitions. Word has length 173 [2020-10-29 08:23:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:47,748 INFO L481 AbstractCegarLoop]: Abstraction has 5149 states and 6763 transitions. [2020-10-29 08:23:47,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 6763 transitions. [2020-10-29 08:23:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 08:23:47,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:47,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:47,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:23:47,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash -572106597, now seen corresponding path program 1 times [2020-10-29 08:23:47,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:47,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445565624] [2020-10-29 08:23:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:52,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:52,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 08:23:52,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-10-29 08:23:52,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:52,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:23:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:23:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:52,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:52,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:52,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:52,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:52,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:52,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:23:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:53,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:53,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:23:53,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:23:53,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:53,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:23:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:23:53,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445565624] [2020-10-29 08:23:53,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:53,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:23:53,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113756127] [2020-10-29 08:23:53,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:23:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:23:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:23:53,290 INFO L87 Difference]: Start difference. First operand 5149 states and 6763 transitions. Second operand 9 states. [2020-10-29 08:24:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:26,561 INFO L93 Difference]: Finished difference Result 18776 states and 26316 transitions. [2020-10-29 08:24:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 08:24:26,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2020-10-29 08:24:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:26,643 INFO L225 Difference]: With dead ends: 18776 [2020-10-29 08:24:26,644 INFO L226 Difference]: Without dead ends: 13148 [2020-10-29 08:24:26,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:24:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13148 states. [2020-10-29 08:24:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13148 to 12998. [2020-10-29 08:24:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12998 states. [2020-10-29 08:24:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12998 states to 12998 states and 16954 transitions. [2020-10-29 08:24:27,094 INFO L78 Accepts]: Start accepts. Automaton has 12998 states and 16954 transitions. Word has length 179 [2020-10-29 08:24:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:27,095 INFO L481 AbstractCegarLoop]: Abstraction has 12998 states and 16954 transitions. [2020-10-29 08:24:27,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:24:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12998 states and 16954 transitions. [2020-10-29 08:24:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 08:24:27,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:27,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:27,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:24:27,099 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1815685915, now seen corresponding path program 1 times [2020-10-29 08:24:27,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:27,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075037290] [2020-10-29 08:24:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 08:24:31,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:24:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4660 [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:24:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:31,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:24:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:31,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:32,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:32,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 08:24:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:32,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:24:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:24:32,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075037290] [2020-10-29 08:24:32,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:32,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:24:32,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553553436] [2020-10-29 08:24:32,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:24:32,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:32,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:24:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:24:32,470 INFO L87 Difference]: Start difference. First operand 12998 states and 16954 transitions. Second operand 5 states. [2020-10-29 08:24:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:49,114 INFO L93 Difference]: Finished difference Result 26440 states and 34889 transitions. [2020-10-29 08:24:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:24:49,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-29 08:24:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:49,178 INFO L225 Difference]: With dead ends: 26440 [2020-10-29 08:24:49,178 INFO L226 Difference]: Without dead ends: 13448 [2020-10-29 08:24:49,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:24:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13448 states. [2020-10-29 08:24:49,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13448 to 13428. [2020-10-29 08:24:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13428 states. [2020-10-29 08:24:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13428 states to 13428 states and 17827 transitions. [2020-10-29 08:24:49,644 INFO L78 Accepts]: Start accepts. Automaton has 13428 states and 17827 transitions. Word has length 190 [2020-10-29 08:24:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:49,644 INFO L481 AbstractCegarLoop]: Abstraction has 13428 states and 17827 transitions. [2020-10-29 08:24:49,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:24:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 13428 states and 17827 transitions. [2020-10-29 08:24:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 08:24:49,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:49,650 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:49,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:24:49,651 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash -481567192, now seen corresponding path program 1 times [2020-10-29 08:24:49,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:49,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466688551] [2020-10-29 08:24:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:50,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:54,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:24:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:24:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:55,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:55,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:24:55,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:55,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-29 08:24:55,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:55,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:24:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:55,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:55,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:24:55,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:55,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:24:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:24:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:24:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:24:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:55,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:24:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 08:24:56,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466688551] [2020-10-29 08:24:56,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:56,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:24:56,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480650946] [2020-10-29 08:24:56,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:24:56,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:24:56,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:24:56,112 INFO L87 Difference]: Start difference. First operand 13428 states and 17827 transitions. Second operand 9 states. [2020-10-29 08:25:27,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:27,043 INFO L93 Difference]: Finished difference Result 46551 states and 64010 transitions. [2020-10-29 08:25:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:25:27,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2020-10-29 08:25:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:27,207 INFO L225 Difference]: With dead ends: 46551 [2020-10-29 08:25:27,207 INFO L226 Difference]: Without dead ends: 32209 [2020-10-29 08:25:27,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:25:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32209 states. [2020-10-29 08:25:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32209 to 27672. [2020-10-29 08:25:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27672 states. [2020-10-29 08:25:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27672 states to 27672 states and 36456 transitions. [2020-10-29 08:25:28,458 INFO L78 Accepts]: Start accepts. Automaton has 27672 states and 36456 transitions. Word has length 265 [2020-10-29 08:25:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:28,459 INFO L481 AbstractCegarLoop]: Abstraction has 27672 states and 36456 transitions. [2020-10-29 08:25:28,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:25:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 27672 states and 36456 transitions. [2020-10-29 08:25:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 08:25:28,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:28,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:28,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:25:28,467 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1766928021, now seen corresponding path program 1 times [2020-10-29 08:25:28,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416472948] [2020-10-29 08:25:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-29 08:25:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:25:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:33,819 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:25:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:25:33,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:25:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:34,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:34,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:25:34,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 08:25:34,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:34,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:25:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 08:25:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:34,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:34,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 08:25:34,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:34,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:25:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:25:34,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416472948] [2020-10-29 08:25:34,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:34,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:34,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73132333] [2020-10-29 08:25:34,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:34,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:34,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:34,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:34,754 INFO L87 Difference]: Start difference. First operand 27672 states and 36456 transitions. Second operand 7 states. [2020-10-29 08:26:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:07,024 INFO L93 Difference]: Finished difference Result 60733 states and 80033 transitions. [2020-10-29 08:26:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:26:07,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-29 08:26:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:07,132 INFO L225 Difference]: With dead ends: 60733 [2020-10-29 08:26:07,132 INFO L226 Difference]: Without dead ends: 32135 [2020-10-29 08:26:07,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:26:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32135 states. [2020-10-29 08:26:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32135 to 31148. [2020-10-29 08:26:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31148 states. [2020-10-29 08:26:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31148 states to 31148 states and 39268 transitions. [2020-10-29 08:26:08,086 INFO L78 Accepts]: Start accepts. Automaton has 31148 states and 39268 transitions. Word has length 286 [2020-10-29 08:26:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 31148 states and 39268 transitions. [2020-10-29 08:26:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:26:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 31148 states and 39268 transitions. [2020-10-29 08:26:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-29 08:26:08,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:08,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:08,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:26:08,094 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2118186201, now seen corresponding path program 1 times [2020-10-29 08:26:08,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:08,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123719840] [2020-10-29 08:26:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking...