/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:52:50,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:52:50,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:52:50,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:52:50,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:52:50,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:52:50,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:52:50,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:52:50,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:52:50,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:52:50,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:52:50,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:52:50,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:52:50,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:52:50,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:52:50,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:52:50,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:52:50,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:52:50,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:52:50,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:52:50,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:52:50,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:52:50,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:52:50,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:52:50,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:52:50,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:52:50,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:52:50,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:52:50,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:52:50,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:52:50,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:52:50,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:52:50,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:52:50,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:52:50,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:52:50,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:52:50,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:52:50,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:52:50,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:52:50,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:52:50,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:52:50,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:52:50,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:52:50,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:52:50,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:52:50,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:52:50,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:52:50,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:52:50,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:52:50,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:52:50,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:52:50,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:52:50,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:52:50,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:52:50,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:52:50,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:52:50,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:52:50,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:52:50,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:52:50,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:52:50,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:52:50,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:52:50,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:52:50,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:52:50,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:52:50,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:52:50,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:52:50,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:52:50,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:52:50,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:52:50,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:52:50,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:52:51,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:52:51,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:52:51,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:52:51,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:52:51,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:52:51,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2020-10-26 19:52:51,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18226e3f7/f2505d5c952946298f2b31a741857bbb/FLAGb8475fea3 [2020-10-26 19:52:51,905 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:52:51,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr2.c [2020-10-26 19:52:51,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18226e3f7/f2505d5c952946298f2b31a741857bbb/FLAGb8475fea3 [2020-10-26 19:52:52,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18226e3f7/f2505d5c952946298f2b31a741857bbb [2020-10-26 19:52:52,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:52:52,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:52:52,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:52:52,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:52:52,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:52:52,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bd0571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52, skipping insertion in model container [2020-10-26 19:52:52,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:52:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:52:52,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:52:52,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:52:52,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:52:52,566 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:52:52,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52 WrapperNode [2020-10-26 19:52:52,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:52:52,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:52:52,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:52:52,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:52:52,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... [2020-10-26 19:52:52,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:52:52,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:52:52,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:52:52,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:52:52,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:52:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:52:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:52:52,720 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:52:52,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:52:52,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:52:52,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:52:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:52:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:52:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:52:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:52:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:52:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:52:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:52:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:52:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:52:53,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:52:53,410 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:52:53,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:53 BoogieIcfgContainer [2020-10-26 19:52:53,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:52:53,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:52:53,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:52:53,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:52:53,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:52:52" (1/3) ... [2020-10-26 19:52:53,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaef3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:53, skipping insertion in model container [2020-10-26 19:52:53,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:52" (2/3) ... [2020-10-26 19:52:53,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaef3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:53, skipping insertion in model container [2020-10-26 19:52:53,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:53" (3/3) ... [2020-10-26 19:52:53,422 INFO L111 eAbstractionObserver]: Analyzing ICFG nr2.c [2020-10-26 19:52:53,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:52:53,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:52:53,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:52:53,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:52:53,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:52:53,484 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:52:53,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:52:53,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:52:53,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:52:53,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:52:53,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:52:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:52:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:52:53,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:53,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:53,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:53,520 INFO L82 PathProgramCache]: Analyzing trace with hash -71068241, now seen corresponding path program 1 times [2020-10-26 19:52:53,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:53,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809011183] [2020-10-26 19:52:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:54,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:52:54,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:52:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-26 19:52:54,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 19:52:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:52:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:52:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:52:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:52:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 19:52:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:54,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809011183] [2020-10-26 19:52:54,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:52:54,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:52:54,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762362124] [2020-10-26 19:52:54,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:52:54,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:54,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:52:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:52:54,331 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-26 19:52:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:54,539 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-26 19:52:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:52:54,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-26 19:52:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:54,550 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:52:54,550 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 19:52:54,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:52:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 19:52:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-26 19:52:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 19:52:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 19:52:54,600 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-26 19:52:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:54,600 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 19:52:54,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:52:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-26 19:52:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:52:54,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:54,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:54,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:52:54,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2036094566, now seen corresponding path program 1 times [2020-10-26 19:52:54,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:54,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000869488] [2020-10-26 19:52:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:55,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:55,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:52:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:52:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-26 19:52:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:52:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:52:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 19:52:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:52:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:55,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:52:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:52:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:55,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:55,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:52:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:52:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:55,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000869488] [2020-10-26 19:52:55,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:52:55,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:52:55,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258240642] [2020-10-26 19:52:55,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:52:55,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:55,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:52:55,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:52:55,667 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-26 19:52:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:55,969 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-26 19:52:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:52:55,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-26 19:52:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:55,972 INFO L225 Difference]: With dead ends: 51 [2020-10-26 19:52:55,973 INFO L226 Difference]: Without dead ends: 38 [2020-10-26 19:52:55,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:52:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-26 19:52:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-26 19:52:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 19:52:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 19:52:55,988 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-26 19:52:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:55,988 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 19:52:55,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:52:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 19:52:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 19:52:55,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:55,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:55,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:52:55,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash -640613893, now seen corresponding path program 1 times [2020-10-26 19:52:55,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:55,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938315963] [2020-10-26 19:52:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:52:56,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 19:52:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-26 19:52:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:52:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:52:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:52:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:56,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:52:56,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:56,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938315963] [2020-10-26 19:52:56,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:52:56,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:52:56,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326206362] [2020-10-26 19:52:56,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:52:56,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:52:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:52:56,193 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-26 19:52:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:56,299 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-26 19:52:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:52:56,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 19:52:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:56,301 INFO L225 Difference]: With dead ends: 54 [2020-10-26 19:52:56,302 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 19:52:56,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:52:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 19:52:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-26 19:52:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:52:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 19:52:56,311 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-10-26 19:52:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:56,311 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 19:52:56,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:52:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 19:52:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 19:52:56,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:56,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:56,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:52:56,313 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash 113037761, now seen corresponding path program 1 times [2020-10-26 19:52:56,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:56,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568943836] [2020-10-26 19:52:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 19:52:56,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:52:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-26 19:52:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:52:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:52:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 19:52:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:52:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:52:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:52:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:52:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:56,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568943836] [2020-10-26 19:52:56,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:52:56,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:52:56,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367181383] [2020-10-26 19:52:56,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:52:56,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:52:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:52:56,967 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-10-26 19:52:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:57,115 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-26 19:52:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:52:57,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-26 19:52:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:57,117 INFO L225 Difference]: With dead ends: 56 [2020-10-26 19:52:57,117 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 19:52:57,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:52:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 19:52:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 19:52:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 19:52:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-26 19:52:57,126 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2020-10-26 19:52:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:57,126 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-26 19:52:57,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:52:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-26 19:52:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:52:57,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:57,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:57,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:52:57,128 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:57,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:57,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1768599869, now seen corresponding path program 1 times [2020-10-26 19:52:57,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:57,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970018852] [2020-10-26 19:52:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:58,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:58,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:52:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:52:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-10-26 19:52:58,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:52:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:52:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 19:52:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:58,452 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-26 19:52:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:52:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:52:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:58,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:52:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:58,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:58,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:58,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:52:58,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:52:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:58,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970018852] [2020-10-26 19:52:58,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:52:58,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:52:58,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352204941] [2020-10-26 19:52:58,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:52:58,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:52:58,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:52:58,640 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 10 states. [2020-10-26 19:52:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:59,643 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-10-26 19:52:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:52:59,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-26 19:52:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:59,646 INFO L225 Difference]: With dead ends: 70 [2020-10-26 19:52:59,646 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 19:52:59,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:52:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 19:52:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-10-26 19:52:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 19:52:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-26 19:52:59,657 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 32 [2020-10-26 19:52:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:59,658 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-26 19:52:59,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:52:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-26 19:52:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:52:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:59,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:59,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:52:59,660 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1711341567, now seen corresponding path program 1 times [2020-10-26 19:52:59,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:59,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867037611] [2020-10-26 19:52:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:00,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:00,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:53:00,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:53:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-26 19:53:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:53:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:53:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-26 19:53:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:01,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 19:53:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:01,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:01,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:53:01,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:01,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867037611] [2020-10-26 19:53:01,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:01,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:53:01,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403324860] [2020-10-26 19:53:01,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:53:01,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:01,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:53:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:53:01,198 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 12 states. [2020-10-26 19:53:01,860 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2020-10-26 19:53:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:02,402 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-26 19:53:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:53:02,404 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-26 19:53:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:02,406 INFO L225 Difference]: With dead ends: 64 [2020-10-26 19:53:02,406 INFO L226 Difference]: Without dead ends: 61 [2020-10-26 19:53:02,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:53:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-26 19:53:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-10-26 19:53:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 19:53:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-26 19:53:02,418 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 32 [2020-10-26 19:53:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:02,419 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-26 19:53:02,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:53:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-26 19:53:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-26 19:53:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:02,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:02,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:53:02,421 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1228984825, now seen corresponding path program 1 times [2020-10-26 19:53:02,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:02,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727040642] [2020-10-26 19:53:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:06,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-26 19:53:06,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:53:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3687 [2020-10-26 19:53:06,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:53:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 19:53:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:06,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:06,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:06,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 19:53:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:53:06,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727040642] [2020-10-26 19:53:06,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:06,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:53:06,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24916868] [2020-10-26 19:53:06,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:53:06,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:06,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:53:06,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:53:06,341 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 12 states. [2020-10-26 19:53:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:07,057 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-26 19:53:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:53:07,059 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-26 19:53:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:07,063 INFO L225 Difference]: With dead ends: 91 [2020-10-26 19:53:07,063 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 19:53:07,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:53:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 19:53:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2020-10-26 19:53:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-26 19:53:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2020-10-26 19:53:07,082 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 41 [2020-10-26 19:53:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:07,083 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2020-10-26 19:53:07,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:53:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2020-10-26 19:53:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 19:53:07,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:07,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:07,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:53:07,086 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash 811616511, now seen corresponding path program 2 times [2020-10-26 19:53:07,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:07,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304165993] [2020-10-26 19:53:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:53:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:53:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 19:53:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 19:53:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:53:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 19:53:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:08,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:08,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:53:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:08,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 19:53:08,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304165993] [2020-10-26 19:53:08,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:08,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:53:08,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070415053] [2020-10-26 19:53:08,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:53:08,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:53:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:53:08,024 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand 12 states. [2020-10-26 19:53:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:08,685 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2020-10-26 19:53:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:53:08,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-26 19:53:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:08,688 INFO L225 Difference]: With dead ends: 136 [2020-10-26 19:53:08,688 INFO L226 Difference]: Without dead ends: 98 [2020-10-26 19:53:08,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:53:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-26 19:53:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-10-26 19:53:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-26 19:53:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-10-26 19:53:08,710 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 50 [2020-10-26 19:53:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:08,711 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-10-26 19:53:08,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:53:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-10-26 19:53:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 19:53:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:08,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-26 19:53:08,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:53:08,713 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1309756694, now seen corresponding path program 3 times [2020-10-26 19:53:08,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:08,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478879253] [2020-10-26 19:53:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:11,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:13,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:53:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-26 19:53:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:53:13,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:53:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:53:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:14,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 19:53:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:14,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:14,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:14,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:14,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:53:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:14,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:14,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:14,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:53:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478879253] [2020-10-26 19:53:14,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:14,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:53:14,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803094974] [2020-10-26 19:53:14,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:53:14,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:53:14,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:53:14,180 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 16 states. [2020-10-26 19:53:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:15,189 INFO L93 Difference]: Finished difference Result 174 states and 214 transitions. [2020-10-26 19:53:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:53:15,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-26 19:53:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:15,192 INFO L225 Difference]: With dead ends: 174 [2020-10-26 19:53:15,192 INFO L226 Difference]: Without dead ends: 116 [2020-10-26 19:53:15,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:53:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-26 19:53:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 81. [2020-10-26 19:53:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-26 19:53:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-26 19:53:15,215 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 50 [2020-10-26 19:53:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:15,215 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-26 19:53:15,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:53:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-26 19:53:15,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 19:53:15,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:15,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:15,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:53:15,218 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:15,218 INFO L82 PathProgramCache]: Analyzing trace with hash -561625666, now seen corresponding path program 4 times [2020-10-26 19:53:15,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:15,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240272626] [2020-10-26 19:53:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 19:53:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:20,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:20,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:53:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:20,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:53:20,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:53:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 19:53:20,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240272626] [2020-10-26 19:53:20,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:20,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:53:20,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445306796] [2020-10-26 19:53:20,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:20,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:20,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:20,360 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 6 states. [2020-10-26 19:53:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:20,504 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2020-10-26 19:53:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:53:20,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-26 19:53:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:20,506 INFO L225 Difference]: With dead ends: 128 [2020-10-26 19:53:20,506 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 19:53:20,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 19:53:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-10-26 19:53:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-26 19:53:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-26 19:53:20,522 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 53 [2020-10-26 19:53:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:20,522 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-26 19:53:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-26 19:53:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-26 19:53:20,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:20,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:20,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:53:20,524 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash -712731780, now seen corresponding path program 5 times [2020-10-26 19:53:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:20,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745385704] [2020-10-26 19:53:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:22,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 19:53:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:53:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:53:25,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:53:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:53:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:53:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:25,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:25,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:25,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 19:53:25,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745385704] [2020-10-26 19:53:25,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:25,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:53:25,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781064117] [2020-10-26 19:53:25,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:53:25,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:53:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:53:25,843 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 13 states. [2020-10-26 19:53:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:26,833 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2020-10-26 19:53:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:53:26,834 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-26 19:53:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:26,835 INFO L225 Difference]: With dead ends: 101 [2020-10-26 19:53:26,835 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 19:53:26,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:53:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 19:53:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2020-10-26 19:53:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 19:53:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-26 19:53:26,863 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 59 [2020-10-26 19:53:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:26,863 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-26 19:53:26,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:53:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-26 19:53:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 19:53:26,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:26,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:26,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:53:26,867 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash -894016856, now seen corresponding path program 6 times [2020-10-26 19:53:26,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:26,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115798105] [2020-10-26 19:53:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:31,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:31,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 19:53:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 19:53:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:32,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:32,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:53:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 19:53:32,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115798105] [2020-10-26 19:53:32,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:32,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:53:32,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411608143] [2020-10-26 19:53:32,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:53:32,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:32,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:53:32,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:53:32,192 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 15 states. [2020-10-26 19:53:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:33,268 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2020-10-26 19:53:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:53:33,269 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-26 19:53:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:33,271 INFO L225 Difference]: With dead ends: 128 [2020-10-26 19:53:33,273 INFO L226 Difference]: Without dead ends: 125 [2020-10-26 19:53:33,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:53:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-26 19:53:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2020-10-26 19:53:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-26 19:53:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-10-26 19:53:33,311 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 68 [2020-10-26 19:53:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:33,313 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-10-26 19:53:33,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:53:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-10-26 19:53:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-26 19:53:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:33,316 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:33,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:53:33,317 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 796113278, now seen corresponding path program 7 times [2020-10-26 19:53:33,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:33,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573936987] [2020-10-26 19:53:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:53:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-26 19:53:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:53:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:53:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 19:53:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:34,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:34,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:34,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:53:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:53:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:34,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:34,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:34,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:34,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:53:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-26 19:53:34,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573936987] [2020-10-26 19:53:34,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:34,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:53:34,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839911705] [2020-10-26 19:53:34,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:53:34,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:53:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:53:34,410 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 15 states. [2020-10-26 19:53:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:35,344 INFO L93 Difference]: Finished difference Result 180 states and 210 transitions. [2020-10-26 19:53:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:53:35,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-26 19:53:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:35,347 INFO L225 Difference]: With dead ends: 180 [2020-10-26 19:53:35,347 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 19:53:35,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:53:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 19:53:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-10-26 19:53:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-26 19:53:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-10-26 19:53:35,370 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 77 [2020-10-26 19:53:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:35,371 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-10-26 19:53:35,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:53:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-10-26 19:53:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-26 19:53:35,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:35,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:35,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:53:35,372 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1689393179, now seen corresponding path program 8 times [2020-10-26 19:53:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:35,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805064455] [2020-10-26 19:53:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 19:53:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 19:53:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:40,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:40,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:40,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:40,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:40,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:53:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:40,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:40,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:40,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:40,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 19:53:40,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805064455] [2020-10-26 19:53:40,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:40,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:53:40,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884833370] [2020-10-26 19:53:40,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:53:40,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:40,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:53:40,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:53:40,920 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 18 states. [2020-10-26 19:53:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:43,231 INFO L93 Difference]: Finished difference Result 210 states and 256 transitions. [2020-10-26 19:53:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:53:43,233 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2020-10-26 19:53:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:43,236 INFO L225 Difference]: With dead ends: 210 [2020-10-26 19:53:43,236 INFO L226 Difference]: Without dead ends: 207 [2020-10-26 19:53:43,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:53:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-26 19:53:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 126. [2020-10-26 19:53:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-26 19:53:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2020-10-26 19:53:43,284 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 77 [2020-10-26 19:53:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:43,285 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2020-10-26 19:53:43,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:53:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2020-10-26 19:53:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-26 19:53:43,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:43,293 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:43,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:53:43,293 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -151053149, now seen corresponding path program 9 times [2020-10-26 19:53:43,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:43,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182803929] [2020-10-26 19:53:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:43,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 19:53:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:53:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:53:48,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:53:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 19:53:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:48,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:48,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:53:48,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:53:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:48,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:48,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:48,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:48,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:48,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 8 proven. 90 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 19:53:48,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182803929] [2020-10-26 19:53:48,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:48,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:53:48,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170993485] [2020-10-26 19:53:48,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:53:48,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:48,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:53:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:53:48,747 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand 18 states. [2020-10-26 19:53:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:50,647 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-10-26 19:53:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-26 19:53:50,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2020-10-26 19:53:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:50,655 INFO L225 Difference]: With dead ends: 257 [2020-10-26 19:53:50,655 INFO L226 Difference]: Without dead ends: 254 [2020-10-26 19:53:50,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=1861, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:53:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-26 19:53:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 133. [2020-10-26 19:53:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-26 19:53:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2020-10-26 19:53:50,688 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 77 [2020-10-26 19:53:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:50,688 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2020-10-26 19:53:50,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:53:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2020-10-26 19:53:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 19:53:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:50,690 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:50,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:53:50,690 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1979828449, now seen corresponding path program 10 times [2020-10-26 19:53:50,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:50,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180028963] [2020-10-26 19:53:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 19:53:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:53:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:53:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-26 19:53:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180028963] [2020-10-26 19:53:56,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:53:56,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196195625] [2020-10-26 19:53:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:53:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:53:56,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:53:56,140 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand 16 states. [2020-10-26 19:53:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:58,160 INFO L93 Difference]: Finished difference Result 212 states and 255 transitions. [2020-10-26 19:53:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:53:58,163 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-10-26 19:53:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:58,165 INFO L225 Difference]: With dead ends: 212 [2020-10-26 19:53:58,165 INFO L226 Difference]: Without dead ends: 195 [2020-10-26 19:53:58,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 19:53:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-26 19:53:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2020-10-26 19:53:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-26 19:53:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 173 transitions. [2020-10-26 19:53:58,195 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 173 transitions. Word has length 86 [2020-10-26 19:53:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:58,195 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 173 transitions. [2020-10-26 19:53:58,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:53:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 173 transitions. [2020-10-26 19:53:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 19:53:58,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:58,197 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:58,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:53:58,197 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:58,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1455896650, now seen corresponding path program 11 times [2020-10-26 19:53:58,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:58,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956442301] [2020-10-26 19:53:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 19:54:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:54:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:03,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:54:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-26 19:54:03,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956442301] [2020-10-26 19:54:03,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:03,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:54:03,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492477246] [2020-10-26 19:54:03,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:54:03,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:03,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:54:03,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:54:03,309 INFO L87 Difference]: Start difference. First operand 144 states and 173 transitions. Second operand 5 states. [2020-10-26 19:54:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:03,439 INFO L93 Difference]: Finished difference Result 203 states and 242 transitions. [2020-10-26 19:54:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:54:03,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-26 19:54:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:03,443 INFO L225 Difference]: With dead ends: 203 [2020-10-26 19:54:03,443 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 19:54:03,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:54:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 19:54:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-26 19:54:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-26 19:54:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-10-26 19:54:03,466 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 86 [2020-10-26 19:54:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:03,466 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-10-26 19:54:03,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:54:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-10-26 19:54:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 19:54:03,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:03,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:03,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:54:03,469 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -63017245, now seen corresponding path program 12 times [2020-10-26 19:54:03,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:03,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100440661] [2020-10-26 19:54:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 19:54:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 19:54:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:08,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:08,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:08,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 129 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-26 19:54:08,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100440661] [2020-10-26 19:54:08,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:08,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:54:08,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113643352] [2020-10-26 19:54:08,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:54:08,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:54:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:54:08,885 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 18 states. [2020-10-26 19:54:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:10,465 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2020-10-26 19:54:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 19:54:10,466 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2020-10-26 19:54:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:10,467 INFO L225 Difference]: With dead ends: 157 [2020-10-26 19:54:10,467 INFO L226 Difference]: Without dead ends: 154 [2020-10-26 19:54:10,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 19:54:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-26 19:54:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 136. [2020-10-26 19:54:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-26 19:54:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-10-26 19:54:10,496 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 95 [2020-10-26 19:54:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:10,497 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-10-26 19:54:10,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:54:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-10-26 19:54:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 19:54:10,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:10,498 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:10,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:54:10,499 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:10,499 INFO L82 PathProgramCache]: Analyzing trace with hash -182042717, now seen corresponding path program 13 times [2020-10-26 19:54:10,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:10,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120191033] [2020-10-26 19:54:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:54:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:54:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-26 19:54:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:11,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:11,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:54:11,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:54:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:54:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:54:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:11,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:11,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:11,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:11,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 60 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 19:54:11,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120191033] [2020-10-26 19:54:11,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:11,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:54:11,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330212423] [2020-10-26 19:54:11,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:54:11,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:54:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:54:11,925 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 18 states. [2020-10-26 19:54:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:13,448 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2020-10-26 19:54:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:54:13,449 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-26 19:54:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:13,451 INFO L225 Difference]: With dead ends: 177 [2020-10-26 19:54:13,451 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 19:54:13,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:54:13,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 19:54:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-10-26 19:54:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 19:54:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-26 19:54:13,471 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 104 [2020-10-26 19:54:13,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:13,471 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-26 19:54:13,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:54:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-26 19:54:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 19:54:13,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:13,473 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:13,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:54:13,473 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2146077574, now seen corresponding path program 14 times [2020-10-26 19:54:13,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:13,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750486736] [2020-10-26 19:54:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 19:54:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:19,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 12 proven. 190 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-26 19:54:19,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750486736] [2020-10-26 19:54:19,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:19,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:54:19,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319246207] [2020-10-26 19:54:19,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:54:19,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:54:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:54:19,125 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 22 states. [2020-10-26 19:54:21,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:21,576 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2020-10-26 19:54:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:54:21,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-26 19:54:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:21,579 INFO L225 Difference]: With dead ends: 124 [2020-10-26 19:54:21,579 INFO L226 Difference]: Without dead ends: 121 [2020-10-26 19:54:21,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=319, Invalid=1937, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:54:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-26 19:54:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2020-10-26 19:54:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-26 19:54:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-10-26 19:54:21,618 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 104 [2020-10-26 19:54:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:21,618 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-10-26 19:54:21,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:54:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-10-26 19:54:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 19:54:21,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:21,620 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:21,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:54:21,620 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:21,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1713154656, now seen corresponding path program 15 times [2020-10-26 19:54:21,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:21,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855574451] [2020-10-26 19:54:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:54:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-26 19:54:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 19:54:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:54:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 19:54:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 18 proven. 210 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 19:54:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855574451] [2020-10-26 19:54:27,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:27,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:54:27,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912894023] [2020-10-26 19:54:27,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:54:27,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:54:27,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:54:27,193 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 19 states. [2020-10-26 19:54:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:29,784 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-10-26 19:54:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:54:29,785 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 113 [2020-10-26 19:54:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:29,787 INFO L225 Difference]: With dead ends: 156 [2020-10-26 19:54:29,788 INFO L226 Difference]: Without dead ends: 139 [2020-10-26 19:54:29,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=236, Invalid=2020, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:54:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-26 19:54:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2020-10-26 19:54:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 19:54:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2020-10-26 19:54:29,810 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 113 [2020-10-26 19:54:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:29,811 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2020-10-26 19:54:29,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:54:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2020-10-26 19:54:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 19:54:29,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:29,812 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:29,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:54:29,813 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1178586180, now seen corresponding path program 16 times [2020-10-26 19:54:29,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:29,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705748031] [2020-10-26 19:54:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 19:54:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:35,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:54:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:35,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:35,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:35,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 14 proven. 248 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 19:54:35,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705748031] [2020-10-26 19:54:35,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:35,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:54:35,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564365625] [2020-10-26 19:54:35,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:54:35,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:35,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:54:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:54:35,346 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand 21 states. [2020-10-26 19:54:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:37,557 INFO L93 Difference]: Finished difference Result 194 states and 229 transitions. [2020-10-26 19:54:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:54:37,561 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-10-26 19:54:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:37,563 INFO L225 Difference]: With dead ends: 194 [2020-10-26 19:54:37,563 INFO L226 Difference]: Without dead ends: 191 [2020-10-26 19:54:37,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=1764, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 19:54:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-26 19:54:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 171. [2020-10-26 19:54:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-26 19:54:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 202 transitions. [2020-10-26 19:54:37,601 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 202 transitions. Word has length 122 [2020-10-26 19:54:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:37,601 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 202 transitions. [2020-10-26 19:54:37,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:54:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 202 transitions. [2020-10-26 19:54:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 19:54:37,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:37,603 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:37,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:54:37,604 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1708040350, now seen corresponding path program 17 times [2020-10-26 19:54:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:37,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628022398] [2020-10-26 19:54:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:54:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-26 19:54:38,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:54:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:54:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 19:54:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:54:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:54:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 144 proven. 154 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-26 19:54:39,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628022398] [2020-10-26 19:54:39,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:54:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436900658] [2020-10-26 19:54:39,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:54:39,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:54:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:54:39,461 INFO L87 Difference]: Start difference. First operand 171 states and 202 transitions. Second operand 19 states. [2020-10-26 19:54:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:41,235 INFO L93 Difference]: Finished difference Result 216 states and 246 transitions. [2020-10-26 19:54:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:54:41,236 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 131 [2020-10-26 19:54:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:41,237 INFO L225 Difference]: With dead ends: 216 [2020-10-26 19:54:41,237 INFO L226 Difference]: Without dead ends: 133 [2020-10-26 19:54:41,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:54:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-26 19:54:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-10-26 19:54:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-26 19:54:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2020-10-26 19:54:41,268 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 131 [2020-10-26 19:54:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:41,269 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2020-10-26 19:54:41,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:54:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2020-10-26 19:54:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 19:54:41,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:41,270 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:41,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:54:41,271 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:41,271 INFO L82 PathProgramCache]: Analyzing trace with hash 150593985, now seen corresponding path program 18 times [2020-10-26 19:54:41,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:41,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144535637] [2020-10-26 19:54:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:44,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 19:54:46,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-26 19:54:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:54:46,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:54:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 19:54:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:46,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:46,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:46,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:46,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:47,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:54:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:54:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:47,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:47,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:47,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 16 proven. 328 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 19:54:47,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144535637] [2020-10-26 19:54:47,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:47,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:54:47,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766936793] [2020-10-26 19:54:47,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:54:47,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:47,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:54:47,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:54:47,072 INFO L87 Difference]: Start difference. First operand 125 states and 141 transitions. Second operand 25 states. [2020-10-26 19:54:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:50,493 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2020-10-26 19:54:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:54:50,494 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 131 [2020-10-26 19:54:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:50,496 INFO L225 Difference]: With dead ends: 150 [2020-10-26 19:54:50,497 INFO L226 Difference]: Without dead ends: 147 [2020-10-26 19:54:50,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=364, Invalid=2606, Unknown=0, NotChecked=0, Total=2970 [2020-10-26 19:54:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-26 19:54:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2020-10-26 19:54:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-26 19:54:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2020-10-26 19:54:50,530 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 131 [2020-10-26 19:54:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:50,531 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2020-10-26 19:54:50,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:54:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2020-10-26 19:54:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 19:54:50,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:50,533 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:50,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:54:50,533 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1764022651, now seen corresponding path program 19 times [2020-10-26 19:54:50,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:50,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088696726] [2020-10-26 19:54:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:55,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 19:54:55,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:56,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:56,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:54:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:54:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:54:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:56,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:56,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:56,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 24 proven. 356 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-26 19:54:56,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088696726] [2020-10-26 19:54:56,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:56,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:54:56,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652901269] [2020-10-26 19:54:56,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:54:56,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:54:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:54:56,422 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand 22 states. [2020-10-26 19:55:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:00,009 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2020-10-26 19:55:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 19:55:00,010 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-26 19:55:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:00,012 INFO L225 Difference]: With dead ends: 181 [2020-10-26 19:55:00,013 INFO L226 Difference]: Without dead ends: 164 [2020-10-26 19:55:00,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2020-10-26 19:55:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-26 19:55:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 140. [2020-10-26 19:55:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-26 19:55:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2020-10-26 19:55:00,047 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 140 [2020-10-26 19:55:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:00,048 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2020-10-26 19:55:00,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:55:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2020-10-26 19:55:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-26 19:55:00,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:00,050 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:00,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:55:00,050 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:00,050 INFO L82 PathProgramCache]: Analyzing trace with hash -324392513, now seen corresponding path program 20 times [2020-10-26 19:55:00,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:00,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309423702] [2020-10-26 19:55:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-26 19:55:05,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:55:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 19:55:05,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:55:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 19:55:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:05,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:05,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 18 proven. 406 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-26 19:55:05,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309423702] [2020-10-26 19:55:05,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:05,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:55:05,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551871584] [2020-10-26 19:55:05,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:55:05,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:05,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:55:05,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:55:05,820 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand 24 states. [2020-10-26 19:55:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:08,900 INFO L93 Difference]: Finished difference Result 231 states and 274 transitions. [2020-10-26 19:55:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:55:08,901 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 149 [2020-10-26 19:55:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:08,906 INFO L225 Difference]: With dead ends: 231 [2020-10-26 19:55:08,906 INFO L226 Difference]: Without dead ends: 228 [2020-10-26 19:55:08,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:55:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-26 19:55:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 206. [2020-10-26 19:55:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 19:55:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2020-10-26 19:55:08,961 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 149 [2020-10-26 19:55:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:08,961 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2020-10-26 19:55:08,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:55:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2020-10-26 19:55:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-26 19:55:08,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:08,966 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:08,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:55:08,966 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1737950137, now seen corresponding path program 21 times [2020-10-26 19:55:08,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:08,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605828248] [2020-10-26 19:55:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-26 19:55:10,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1793 [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 19:55:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:55:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 275 proven. 195 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-26 19:55:11,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605828248] [2020-10-26 19:55:11,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:11,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:55:11,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211512107] [2020-10-26 19:55:11,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:55:11,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:11,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:55:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:55:11,523 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand 22 states. [2020-10-26 19:55:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:13,534 INFO L93 Difference]: Finished difference Result 255 states and 292 transitions. [2020-10-26 19:55:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:55:13,535 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 158 [2020-10-26 19:55:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:13,536 INFO L225 Difference]: With dead ends: 255 [2020-10-26 19:55:13,536 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 19:55:13,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 19:55:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 19:55:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-26 19:55:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-26 19:55:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2020-10-26 19:55:13,574 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 158 [2020-10-26 19:55:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:13,574 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2020-10-26 19:55:13,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:55:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2020-10-26 19:55:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-26 19:55:13,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:13,575 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:13,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:55:13,576 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash 22777378, now seen corresponding path program 22 times [2020-10-26 19:55:13,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:13,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780331091] [2020-10-26 19:55:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:18,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 19:55:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 19 proven. 499 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-26 19:55:19,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780331091] [2020-10-26 19:55:19,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:19,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:55:19,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029025823] [2020-10-26 19:55:19,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:55:19,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:19,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:55:19,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:55:19,404 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand 26 states. [2020-10-26 19:55:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:23,129 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2020-10-26 19:55:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 19:55:23,131 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 158 [2020-10-26 19:55:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:23,133 INFO L225 Difference]: With dead ends: 173 [2020-10-26 19:55:23,133 INFO L226 Difference]: Without dead ends: 170 [2020-10-26 19:55:23,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2020-10-26 19:55:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-26 19:55:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2020-10-26 19:55:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-26 19:55:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2020-10-26 19:55:23,168 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 158 [2020-10-26 19:55:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:23,169 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2020-10-26 19:55:23,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:55:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2020-10-26 19:55:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 19:55:23,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:23,170 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:23,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:55:23,171 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1668208452, now seen corresponding path program 23 times [2020-10-26 19:55:23,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122953672] [2020-10-26 19:55:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 19:55:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:55:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:55:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:55:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:55:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 30 proven. 541 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-26 19:55:29,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122953672] [2020-10-26 19:55:29,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:29,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:55:29,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978482887] [2020-10-26 19:55:29,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:55:29,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:55:29,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:55:29,281 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand 25 states. [2020-10-26 19:55:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:34,181 INFO L93 Difference]: Finished difference Result 206 states and 234 transitions. [2020-10-26 19:55:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-26 19:55:34,182 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 167 [2020-10-26 19:55:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:34,187 INFO L225 Difference]: With dead ends: 206 [2020-10-26 19:55:34,187 INFO L226 Difference]: Without dead ends: 189 [2020-10-26 19:55:34,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=328, Invalid=3962, Unknown=0, NotChecked=0, Total=4290 [2020-10-26 19:55:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-26 19:55:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 164. [2020-10-26 19:55:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-26 19:55:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 187 transitions. [2020-10-26 19:55:34,240 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 187 transitions. Word has length 167 [2020-10-26 19:55:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:34,241 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 187 transitions. [2020-10-26 19:55:34,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:55:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 187 transitions. [2020-10-26 19:55:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-26 19:55:34,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:34,243 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:34,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:55:34,244 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1443356640, now seen corresponding path program 24 times [2020-10-26 19:55:34,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:34,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426270941] [2020-10-26 19:55:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:55:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-26 19:55:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:55:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:55:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 22 proven. 603 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-26 19:55:40,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426270941] [2020-10-26 19:55:40,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:40,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:55:40,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688404053] [2020-10-26 19:55:40,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:55:40,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:40,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:55:40,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:55:40,196 INFO L87 Difference]: Start difference. First operand 164 states and 187 transitions. Second operand 27 states. [2020-10-26 19:55:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:44,339 INFO L93 Difference]: Finished difference Result 268 states and 319 transitions. [2020-10-26 19:55:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-26 19:55:44,340 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 176 [2020-10-26 19:55:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:44,342 INFO L225 Difference]: With dead ends: 268 [2020-10-26 19:55:44,342 INFO L226 Difference]: Without dead ends: 265 [2020-10-26 19:55:44,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=299, Invalid=3241, Unknown=0, NotChecked=0, Total=3540 [2020-10-26 19:55:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-26 19:55:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2020-10-26 19:55:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-26 19:55:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 288 transitions. [2020-10-26 19:55:44,412 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 288 transitions. Word has length 176 [2020-10-26 19:55:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:44,412 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 288 transitions. [2020-10-26 19:55:44,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 19:55:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 288 transitions. [2020-10-26 19:55:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 19:55:44,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:44,415 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:44,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:55:44,415 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:44,416 INFO L82 PathProgramCache]: Analyzing trace with hash 462396230, now seen corresponding path program 25 times [2020-10-26 19:55:44,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:44,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548017912] [2020-10-26 19:55:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2896 [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:55:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:55:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-26 19:55:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:55:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:55:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:55:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:55:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 390 proven. 291 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-26 19:55:48,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548017912] [2020-10-26 19:55:48,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:48,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:55:48,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342375110] [2020-10-26 19:55:48,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:55:48,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:55:48,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:55:48,468 INFO L87 Difference]: Start difference. First operand 241 states and 288 transitions. Second operand 27 states. [2020-10-26 19:55:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:50,572 INFO L93 Difference]: Finished difference Result 294 states and 338 transitions. [2020-10-26 19:55:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:55:50,573 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 185 [2020-10-26 19:55:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:50,575 INFO L225 Difference]: With dead ends: 294 [2020-10-26 19:55:50,575 INFO L226 Difference]: Without dead ends: 181 [2020-10-26 19:55:50,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:55:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-26 19:55:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 173. [2020-10-26 19:55:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-26 19:55:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2020-10-26 19:55:50,623 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 185 [2020-10-26 19:55:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:50,624 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2020-10-26 19:55:50,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 19:55:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2020-10-26 19:55:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 19:55:50,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:50,626 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:50,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:55:50,626 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1569860195, now seen corresponding path program 26 times [2020-10-26 19:55:50,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:50,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92974943] [2020-10-26 19:55:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:55,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:55,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 19:55:55,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 19:55:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:55:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:55:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:55:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:55:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:55:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 24 proven. 720 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-26 19:55:56,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92974943] [2020-10-26 19:55:56,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:56,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-26 19:55:56,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178968525] [2020-10-26 19:55:56,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 19:55:56,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:56,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 19:55:56,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:55:56,811 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand 30 states. [2020-10-26 19:56:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:02,049 INFO L93 Difference]: Finished difference Result 278 states and 330 transitions. [2020-10-26 19:56:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-26 19:56:02,050 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 185 [2020-10-26 19:56:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:02,052 INFO L225 Difference]: With dead ends: 278 [2020-10-26 19:56:02,052 INFO L226 Difference]: Without dead ends: 275 [2020-10-26 19:56:02,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=480, Invalid=4490, Unknown=0, NotChecked=0, Total=4970 [2020-10-26 19:56:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-26 19:56:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 250. [2020-10-26 19:56:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-26 19:56:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2020-10-26 19:56:02,117 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 185 [2020-10-26 19:56:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:02,117 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2020-10-26 19:56:02,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 19:56:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2020-10-26 19:56:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 19:56:02,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:02,119 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:02,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 19:56:02,120 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1807365591, now seen corresponding path program 27 times [2020-10-26 19:56:02,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:02,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367511443] [2020-10-26 19:56:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:56:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 19:56:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:56:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:56:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:56:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:56:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 36 proven. 765 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-26 19:56:08,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367511443] [2020-10-26 19:56:08,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:08,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-26 19:56:08,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793734267] [2020-10-26 19:56:08,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 19:56:08,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 19:56:08,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:56:08,353 INFO L87 Difference]: Start difference. First operand 250 states and 298 transitions. Second operand 28 states. [2020-10-26 19:56:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:15,026 INFO L93 Difference]: Finished difference Result 299 states and 354 transitions. [2020-10-26 19:56:15,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-26 19:56:15,027 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 194 [2020-10-26 19:56:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:15,029 INFO L225 Difference]: With dead ends: 299 [2020-10-26 19:56:15,029 INFO L226 Difference]: Without dead ends: 282 [2020-10-26 19:56:15,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=374, Invalid=5176, Unknown=0, NotChecked=0, Total=5550 [2020-10-26 19:56:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-26 19:56:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2020-10-26 19:56:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-26 19:56:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 313 transitions. [2020-10-26 19:56:15,100 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 313 transitions. Word has length 194 [2020-10-26 19:56:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:15,101 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 313 transitions. [2020-10-26 19:56:15,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-26 19:56:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 313 transitions. [2020-10-26 19:56:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 19:56:15,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:15,103 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:15,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-26 19:56:15,103 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash 455345280, now seen corresponding path program 28 times [2020-10-26 19:56:15,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:15,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508261701] [2020-10-26 19:56:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-26 19:56:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:56:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:56:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:56:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:56:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:56:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:56:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:56:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:56:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:56:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-26 19:56:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 27 proven. 848 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-26 19:56:21,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508261701] [2020-10-26 19:56:21,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:21,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-26 19:56:21,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720993086] [2020-10-26 19:56:21,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-26 19:56:21,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:21,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-26 19:56:21,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:56:21,764 INFO L87 Difference]: Start difference. First operand 261 states and 313 transitions. Second operand 33 states.